{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T22:50:17Z","timestamp":1789080617949,"version":"build-2803163510"},"reference-count":161,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[2016,2,1]],"date-time":"2016-02-01T00:00:00Z","timestamp":1454284800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2016,2,1]],"date-time":"2016-02-01T00:00:00Z","timestamp":1454284800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["ajog.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Obstetrics and Gynecology"],"published-print":{"date-parts":[[2016,2]]},"DOI":"10.1016\/j.ajog.2015.10.930","type":"journal-article","created":{"date-parts":[[2015,11,6]],"date-time":"2015-11-06T05:30:47Z","timestamp":1446787847000},"page":"172-191","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":100,"title":["A review of the mechanisms and evidence for typical and atypical twinning"],"prefix":"10.1016","volume":"214","author":[{"given":"Helen C.","family":"McNamara","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5172-3263","authenticated-orcid":false,"given":"Stefan C.","family":"Kane","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey M.","family":"Craig","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roger V.","family":"Short","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark P.","family":"Umstad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2015.10.930_bib1","doi-asserted-by":"crossref","first-page":"735","DOI":"10.1016\/S0140-6736(03)14237-7","article-title":"Twinning","volume":"362","author":"Hall","year":"2003","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.10.930_bib2","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1016\/j.siny.2010.06.002","article-title":"Genetics and developmental pathology of twinning","volume":"15","author":"Weber","year":"2010","journal-title":"Semin Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib3","series-title":"Consensus views arising from the 50th study group: multiple pregnancy","first-page":"283","author":"Kilby","year":"2006"},{"key":"10.1016\/j.ajog.2015.10.930_bib4","doi-asserted-by":"crossref","first-page":"1236","DOI":"10.1016\/S0140-6736(87)92688-2","article-title":"Increased monozygotic twinning rate after ovulation induction","volume":"1","author":"Derom","year":"1987","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.10.930_bib5","doi-asserted-by":"crossref","first-page":"1318","DOI":"10.1093\/oxfordjournals.humrep.a138701","article-title":"Monozygotic twinning in the human is associated with the zona pellucida architecture","volume":"9","author":"Alikani","year":"1994","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib6","doi-asserted-by":"crossref","first-page":"738","DOI":"10.1056\/NEJM199903043400916","article-title":"Zygotic splitting after assisted reproduction","volume":"340","author":"Blickstein","year":"1999","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib7","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1111\/j.1479-828X.2012.01445.x","article-title":"Chimaeric twins: why monochorionicity does not guarantee monozygosity","volume":"52","author":"Umstad","year":"2012","journal-title":"Aust N Z J Obstet Gynaecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib8","first-page":"1","article-title":"The timing of monozygotic twinning: a criticism of the common model","author":"Herranz","year":"2013","journal-title":"Zygote"},{"key":"10.1016\/j.ajog.2015.10.930_bib9","first-page":"1","article-title":"Comment on G. Herranz: The timing of monozygotic twinning: a criticism of the common model. Zygote (2013)","author":"Denker","year":"2013","journal-title":"Zygote"},{"key":"10.1016\/j.ajog.2015.10.930_bib10","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1002\/(SICI)1096-8628(19960122)61:3<264::AID-AJMG11>3.0.CO;2-R","article-title":"Blood group chimerism in human multiple births is not rare","volume":"61","author":"van Dijk","year":"1996","journal-title":"Am J Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib11","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1136\/jmg.13.6.528","article-title":"A\u00a0case of twin chimerism","volume":"13","author":"Robinson","year":"1976","journal-title":"J\u00a0Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib12","doi-asserted-by":"crossref","first-page":"190","DOI":"10.1016\/S0198-8859(99)00183-4","article-title":"Immunological tolerance in an HLA non-identical chimeric twin","volume":"61","author":"Vi\u00ebtor","year":"2000","journal-title":"Hum Immunol"},{"key":"10.1016\/j.ajog.2015.10.930_bib13","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1093\/humrep\/16.1.56","article-title":"Chimerism in a fertile woman with 46,XY karyotype and female phenotype","volume":"16","author":"Sudik","year":"2001","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib14","first-page":"621","article-title":"Unusual monochorionic placentation with heterosexual twins","volume":"36","author":"Nylander","year":"1970","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib15","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1056\/NEJMoa030050","article-title":"A\u00a0report of dizygous monochorionic twins","volume":"349","author":"Souter","year":"2003","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib16","first-page":"279","article-title":"Twin-twin transfusion syndrome in a dizygotic monochorionic-diamniotic twin pregnancy","volume":"14","author":"Quintero","year":"2003","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib17","doi-asserted-by":"crossref","first-page":"2816","DOI":"10.1093\/humrep\/deh533","article-title":"Blood lymphocyte chimerism associated with IVF and monochorionic dizygous twinning: case report","volume":"19","author":"Williams","year":"2004","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib18","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1159\/000081363","article-title":"Fusion as the etiology of chimerism in monochorionic dizygotic twins","volume":"20","author":"Ginsberg","year":"2005","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2015.10.930_bib19","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s10038-004-0216-6","article-title":"Do monochorionic dizygotic twins increase after pregnancy by assisted reproductive technology?","volume":"50","author":"Miura","year":"2005","journal-title":"J\u00a0Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib20","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1016\/j.jpeds.2004.12.021","article-title":"Dizygotic twin pregnancy conceived with assisted reproductive technology associated with chromosomal anomaly, imprinting disorder, and monochorionic placentation","volume":"146","author":"Yoon","year":"2005","journal-title":"J\u00a0Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib21","doi-asserted-by":"crossref","first-page":"735","DOI":"10.1093\/humrep\/dei379","article-title":"Blood chimerism in monochorionic twins conceived by induced ovulation: case report","volume":"21","author":"Aoki","year":"2005","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib22","doi-asserted-by":"crossref","first-page":"369","DOI":"10.1002\/pd.1670","article-title":"Confined blood chimerism in monochorionic dizygous (MCDZ) twins","volume":"27","author":"Walker","year":"2007","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib23","doi-asserted-by":"crossref","first-page":"832","DOI":"10.1002\/uog.6221","article-title":"Dizygotic monochorionic twin pregnancy conceived following intracytoplasmic sperm injection treatment and complicated by twin-twin transfusion syndrome and blood chimerism","volume":"32","author":"Ekelund","year":"2008","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib24","doi-asserted-by":"crossref","first-page":"708","DOI":"10.1080\/14767050902763159","article-title":"Monochorionic dizygotic twins in a spontaneous pregnancy: a rare case report","volume":"22","author":"Hackmon","year":"2009","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib25","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1097\/AOG.0b013e3181e4bec7","article-title":"Discordant blood chimerism in dizygotic monochorionic laser-treated twin\u2013twin transfusion syndrome","volume":"116","author":"Assaf","year":"2010","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib26","doi-asserted-by":"crossref","first-page":"1487","DOI":"10.1007\/s10815-013-0109-8","article-title":"Testicular hypoplasia in monochorionic dizygous twin with confined blood chimerism","volume":"30","author":"Choi","year":"2013","journal-title":"J\u00a0Assist Reprod Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib27","doi-asserted-by":"crossref","first-page":"e1097","DOI":"10.1542\/peds.2013-1938","article-title":"Chimerism of buccal membrane cells in a monochorionic dizygotic twin","volume":"133","author":"Fumoto","year":"2014","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2015.10.930_bib28","doi-asserted-by":"crossref","first-page":"259","DOI":"10.3343\/alm.2014.34.3.259","article-title":"The first known case of blood group chimerism in monochorionic dizygotic twins in Korea","volume":"34","author":"Lee","year":"2014","journal-title":"Ann Lab Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib29","doi-asserted-by":"crossref","first-page":"1249","DOI":"10.1007\/s00431-014-2312-8","article-title":"Monochorionic dizygotic twins with discordant sex and confined blood chimerism","volume":"173","author":"Lee","year":"2014","journal-title":"Eur J Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib30","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1098\/rstb.1970.0054","article-title":"The bovine freemartin: a new look at an old problem","volume":"259","author":"Short","year":"1970","journal-title":"Philos Trans R Soc Lond B Biol Sci"},{"key":"10.1016\/j.ajog.2015.10.930_bib31","doi-asserted-by":"crossref","first-page":"1817","DOI":"10.1002\/ajmg.a.35957","article-title":"Chimerism in monochorionic dizygotic twins: case study and review","volume":"161","author":"Chen","year":"2013","journal-title":"Am J Med Genet A"},{"key":"10.1016\/j.ajog.2015.10.930_bib32","doi-asserted-by":"crossref","first-page":"446","DOI":"10.3109\/01443615.2011.570813","article-title":"Twin-twin confusion syndrome: blood chimerism in opposite sex dizygotic twins","volume":"31","author":"Hawcutt","year":"2011","journal-title":"J\u00a0Obstet Gynaecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib33","doi-asserted-by":"crossref","first-page":"342","DOI":"10.1016\/S0015-0282(16)43164-X","article-title":"Binovular follicles in the adult human ovary","volume":"29","author":"Papadaki","year":"1978","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib34","first-page":"215","article-title":"A\u00a0method for obtaining chimaeric mouse blastocysts with two separate inner cell masses: a preliminary report","volume":"71","author":"Tarkowski","year":"1982","journal-title":"J\u00a0Embryol Exp Morphol"},{"key":"10.1016\/j.ajog.2015.10.930_bib35","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/j.fertnstert.2005.11.073","article-title":"Effect of the mode of assisted reproductive technology conception on obstetric outcomes for survivors of the vanishing twin syndrome","volume":"86","author":"La Sala","year":"2006","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib36","doi-asserted-by":"crossref","first-page":"4176","DOI":"10.1093\/hmg\/ddq336","article-title":"DNA methylation analysis of multiple tissues from newborn twins reveals both genetic and intrauterine components to variation in the human neonatal epigenome","volume":"19","author":"Ollikainen","year":"2010","journal-title":"Hum Mol Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib37","doi-asserted-by":"crossref","first-page":"216","DOI":"10.1002\/(SICI)1096-8628(19960122)61:3<216::AID-AJMG5>3.0.CO;2-S","article-title":"Some causes of genotypic and phenotypic discordance in monozygotic twin pairs","volume":"61","author":"Machin","year":"1996","journal-title":"American journal of medical genetics"},{"key":"10.1016\/j.ajog.2015.10.930_bib38","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1186\/1741-7015-10-93","article-title":"Genetic, environmental and stochastic factors in monozygotic twin discordance with a focus on epigenetic differences","volume":"10","author":"Czyz","year":"2012","journal-title":"BMC Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib39","doi-asserted-by":"crossref","first-page":"1395","DOI":"10.1101\/gr.136598.111","article-title":"Neonatal DNA methylation profile in human twins is specified by a complex interplay between intrauterine environmental and genetic factors, subject to tissue-specific influence","volume":"22","author":"Gordon","year":"2012","journal-title":"Genome Res"},{"key":"10.1016\/j.ajog.2015.10.930_bib40","doi-asserted-by":"crossref","first-page":"1069","DOI":"10.4161\/epi.25908","article-title":"Association of maternal and nutrient supply line factors with DNA methylation at the imprinted IGF2\/H19 locus in multiple tissues of newborn twins","volume":"8","author":"Loke","year":"2013","journal-title":"Epigenetics"},{"key":"10.1016\/j.ajog.2015.10.930_bib41","doi-asserted-by":"crossref","first-page":"347","DOI":"10.3390\/genes5020347","article-title":"Epigenetic variation in monozygotic twins: a genome-wide analysis of DNA methylation in buccal cells","volume":"5","author":"van Dongen","year":"2014","journal-title":"Genes"},{"key":"10.1016\/j.ajog.2015.10.930_bib42","doi-asserted-by":"crossref","first-page":"1335","DOI":"10.1056\/NEJMoa0910752","article-title":"Timing of de novo mutagenesis\u2013a twin study of sodium-channel mutations","volume":"363","author":"Vadlamudi","year":"2010","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib43","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1136\/jmedgenet-2013-101712","article-title":"Somatic point mutations occurring early in development: a monozygotic twin study","volume":"51","author":"Li","year":"2014","journal-title":"J\u00a0Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib44","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1159\/000335284","article-title":"Differences in copy number variation between discordant monozygotic twins as a model for exploring chromosomal mosaicism in congenital heart defects","volume":"2","author":"Breckpot","year":"2011","journal-title":"Mol Syndromol"},{"key":"10.1016\/j.ajog.2015.10.930_bib45","doi-asserted-by":"crossref","first-page":"1037","DOI":"10.1038\/ejhg.2012.49","article-title":"De\u00a0novo\u00a0and inherited CNVs in MZ twin pairs selected for discordance and concordance on Attention Problems","volume":"20","author":"Ehli","year":"2012","journal-title":"Eur J Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib46","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1136\/jmg.3.2.117","article-title":"Monozygotic twins of different sex","volume":"3","author":"Edwards","year":"1966","journal-title":"J\u00a0Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib47","doi-asserted-by":"crossref","first-page":"564","DOI":"10.1186\/1471-2164-15-564","article-title":"Whole genome and exome sequencing of monozygotic twins discordant for Crohn's disease","volume":"15","author":"Petersen","year":"2014","journal-title":"BMC Genomics"},{"key":"10.1016\/j.ajog.2015.10.930_bib48","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1017\/thg.2014.86","article-title":"CNV concordance in 1,097 MZ twin pairs","volume":"18","author":"Abdellaoui","year":"2015","journal-title":"Twin Res Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib49","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1186\/1471-2156-15-19","article-title":"DYZ1\u00a0arrays show sequence variation between the monozygotic males","volume":"15","author":"Yadav","year":"2014","journal-title":"BMC Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib50","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1375\/twin.10.3.486","article-title":"Analysis of mitochondrial DNA in discordant monozygotic twins with neurofibromatosis type 1","volume":"10","author":"Detjen","year":"2007","journal-title":"Twin Res Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib51","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1007\/BF01067398","article-title":"Laterality in twins: the relationship between handedness and hemispheric asymmetry for speech","volume":"8","author":"Springer","year":"1978","journal-title":"Behav Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib52","doi-asserted-by":"crossref","first-page":"443","DOI":"10.1093\/oxfordjournals.jhered.a103698","article-title":"Genetic studies of monozygotic twins: III. Mirror-imaging","volume":"24","author":"Rife","year":"1933","journal-title":"J\u00a0Hered"},{"key":"10.1016\/j.ajog.2015.10.930_bib53","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1002\/ajmg.1320510110","article-title":"Mirror-image dental fusion and discordance in monozygotic twins","volume":"51","author":"Sperber","year":"1994","journal-title":"Am J Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib54","doi-asserted-by":"crossref","first-page":"170","DOI":"10.3928\/01913913-20060301-06","article-title":"Mirror-image congenital esotropia in monozygotic twins","volume":"43","author":"Dirani","year":"2006","journal-title":"J\u00a0Pediatr Ophthalmol Strabismus"},{"key":"10.1016\/j.ajog.2015.10.930_bib55","doi-asserted-by":"crossref","first-page":"e206","DOI":"10.1097\/GOX.0000000000000142","article-title":"Occurrence of different external ear deformities in monozygotic twins: report of 2 cases","volume":"2","author":"Hu","year":"2014","journal-title":"Plast Reconstr Surg Glob Open"},{"key":"10.1016\/j.ajog.2015.10.930_bib56","doi-asserted-by":"crossref","first-page":"732","DOI":"10.1542\/peds.67.5.732","article-title":"Laryngotracheoesophageal cleft and unilateral pulmonary hypoplasia in twins","volume":"67","author":"Novak","year":"1981","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2015.10.930_bib57","doi-asserted-by":"crossref","first-page":"260","DOI":"10.1007\/BF00178747","article-title":"Mirror imaging cleft lip in monozygotic twins","volume":"18","author":"Karaca","year":"1995","journal-title":"Eur J Plast Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib58","doi-asserted-by":"crossref","first-page":"601","DOI":"10.1016\/0007-1226(95)90052-7","article-title":"A\u00a0mirror image of the first and second branchial arch syndrome associated with cleft lip and palate in monozygotic twins","volume":"48","author":"Satoh","year":"1995","journal-title":"Br J Plast Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib59","doi-asserted-by":"crossref","first-page":"94","DOI":"10.1159\/000341251","article-title":"Mirror-image asymmetry in monozygotic twins with kabuki syndrome","volume":"3","author":"Riess","year":"2012","journal-title":"Mol Syndromol"},{"key":"10.1016\/j.ajog.2015.10.930_bib60","doi-asserted-by":"crossref","first-page":"e981","DOI":"10.3928\/01477447-20120525-48","article-title":"Mirror-image trigger thumb in dichorionic identical twins","volume":"35","author":"Wang","year":"2012","journal-title":"Orthopedics"},{"key":"10.1016\/j.ajog.2015.10.930_bib61","doi-asserted-by":"crossref","first-page":"1403","DOI":"10.1007\/s00402-007-0542-1","article-title":"Mirror-image solitary bone cyst of the humerus in a pair of mirror-image monozygotic twins","volume":"128","author":"Goto","year":"2008","journal-title":"Arch Orthop Trauma Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib62","doi-asserted-by":"crossref","first-page":"608","DOI":"10.1378\/chest.106.2.608","article-title":"Mirror-image tumors in mirror-image twins","volume":"106","author":"Morison","year":"1994","journal-title":"Chest"},{"key":"10.1016\/j.ajog.2015.10.930_bib63","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1016\/S0387-7604(88)80041-X","article-title":"Optic glioma with progressive occlusion of the aqueduct of sylvius in monozygotic twins with neurofibromatosis","volume":"10","author":"Pascual-Castroviejo","year":"1988","journal-title":"Brain Dev"},{"key":"10.1016\/j.ajog.2015.10.930_bib64","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1016\/S0387-7604(12)80028-3","article-title":"Colpocephaly in identical twins","volume":"13","author":"Nigro","year":"1991","journal-title":"Brain Dev"},{"key":"10.1016\/j.ajog.2015.10.930_bib65","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1212\/01.wnl.0000265060.93709.00","article-title":"Monozygotic twins with mirror image cysts: indication of a genetic mechanism in arachnoid cysts?","volume":"69","author":"Helland","year":"2007","journal-title":"Neurology"},{"key":"10.1016\/j.ajog.2015.10.930_bib66","doi-asserted-by":"crossref","first-page":"402","DOI":"10.7150\/ijms.8.402","article-title":"Mirror-image arachnoid cysts in a pair of monozygotic twins: a case report and review of the literature","volume":"8","author":"Zhou","year":"2011","journal-title":"Int J Med Sci"},{"key":"10.1016\/j.ajog.2015.10.930_bib67","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1111\/j.1747-0803.2008.00229.x","article-title":"Heterotaxy syndrome with mirror image anomalies in identical twins","volume":"4","author":"Thacker","year":"2009","journal-title":"Congenit Heart Dis"},{"key":"10.1016\/j.ajog.2015.10.930_bib68","doi-asserted-by":"crossref","first-page":"500","DOI":"10.1111\/j.1651-2227.2006.tb02270.x","article-title":"Asplenia syndrome in a pair of monozygotic twins","volume":"95","author":"Hwang","year":"2006","journal-title":"Acta Paediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib69","doi-asserted-by":"crossref","first-page":"407","DOI":"10.1007\/BF02359484","article-title":"Handedness in twins according to zygosity and chorion type: A preliminary report","volume":"26","author":"Derom","year":"1996","journal-title":"Behav Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib70","doi-asserted-by":"crossref","first-page":"1445","DOI":"10.1016\/S0140-6736(99)04130-6","article-title":"Cerebral mirror-imaging in a monozygotic twin","volume":"354","author":"Sommer","year":"1999","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.10.930_bib71","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1375\/136905203321536245","article-title":"Special twin environments, genetic influences and their effects on the handedness of twins and their siblings","volume":"6","author":"Medland","year":"2003","journal-title":"Twin Res"},{"key":"10.1016\/j.ajog.2015.10.930_bib72","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1016\/j.neuropsychologia.2008.09.005","article-title":"Genetic influences on handedness: data from 25,732 Australian and Dutch twin families","volume":"47","author":"Medland","year":"2009","journal-title":"Neuropsychologia"},{"key":"10.1016\/j.ajog.2015.10.930_bib73","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1002\/tera.1420400402","article-title":"Anatomic findings in dicephalic conjoined twins: implications for morphogenesis","volume":"40","author":"Siebert","year":"1989","journal-title":"Teratology"},{"key":"10.1016\/j.ajog.2015.10.930_bib74","first-page":"5","article-title":"An overview of human handedness in twins","author":"Ooki","year":"2014","journal-title":"Front Psychol"},{"key":"10.1016\/j.ajog.2015.10.930_bib75","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1002\/mrd.21266","article-title":"Polar bodies-more a lack of understanding than a lack of respect","volume":"78","author":"Schmerler","year":"2011","journal-title":"Mol Reprod Dev"},{"key":"10.1016\/j.ajog.2015.10.930_bib76","doi-asserted-by":"crossref","first-page":"775","DOI":"10.1126\/science.7196086","article-title":"Genetic studies of an acardiac monster: evidence of polar body twinning in man","volume":"213","author":"Bieber","year":"1981","journal-title":"Science"},{"key":"10.1016\/j.ajog.2015.10.930_bib77","doi-asserted-by":"crossref","first-page":"891","DOI":"10.1016\/S0002-9378(96)70320-4","article-title":"Molecular genetic etiology of twin reversed arterial perfusion sequence","volume":"174","author":"Fisk","year":"1996","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib78","doi-asserted-by":"crossref","first-page":"705","DOI":"10.1097\/00006254-199612000-00002","article-title":"Complete hydatidiform mole and surviving coexistent twin","volume":"51","author":"Bristow","year":"1996","journal-title":"Obstet Gynecol Surv"},{"key":"10.1016\/j.ajog.2015.10.930_bib79","first-page":"546","article-title":"Management of twin pregnancies consisting of a complete hydatidiform mole and normal fetus","volume":"91","author":"Fishman","year":"1998","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib80","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1002\/jcu.22169","article-title":"Sonographic findings and perinatal outcome of multiple pregnancies associating a complete hydatiform mole and a live fetus: a case series","volume":"42","author":"Kutuk","year":"2014","journal-title":"J\u00a0Clin Ultrasound"},{"key":"10.1016\/j.ajog.2015.10.930_bib81","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1016\/j.ejogrb.2008.12.006","article-title":"Twin pregnancy with complete hydatidiform mole and coexistent fetus: obstetrical and oncological outcomes in a series of 14 cases","volume":"143","author":"Massardier","year":"2009","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ajog.2015.10.930_bib82","doi-asserted-by":"crossref","first-page":"2165","DOI":"10.1016\/S0140-6736(02)09085-2","article-title":"Outcome of twin pregnancies with complete hydatidiform mole and healthy co-twin","volume":"359","author":"Sebire","year":"2002","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.10.930_bib83","doi-asserted-by":"crossref","first-page":"415","DOI":"10.1148\/radiology.135.2.7367637","article-title":"Coexistent hydatidiform mole and live fetus in the second trimester: an ultrasound study","volume":"135","author":"Sauerbrei","year":"1980","journal-title":"Radiology"},{"key":"10.1016\/j.ajog.2015.10.930_bib84","doi-asserted-by":"crossref","first-page":"1073","DOI":"10.1002\/(SICI)1097-0223(199911)19:11<1073::AID-PD702>3.0.CO;2-4","article-title":"Clinical management of a quadruplet pregnancy combining a triplet pregnancy with a classical hydatidiform mole: case report and review of literature","volume":"19","author":"Chao","year":"1999","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib85","doi-asserted-by":"crossref","first-page":"45.e1","DOI":"10.1016\/j.ajog.2007.02.038","article-title":"Evaluation of the risk of persistent trophoblastic disease after twin pregnancy with diploid hydatidiform mole and coexisting normal fetus","volume":"197","author":"Niemann","year":"2007","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib86","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1002\/jcu.1870040104","article-title":"Ultrasonic assessment of the high rate of human multiple pregnancy in the first trimester","volume":"4","author":"Levi","year":"1976","journal-title":"J\u00a0Clin Ultrasound"},{"key":"10.1016\/j.ajog.2015.10.930_bib87","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1111\/j.1471-0528.1977.tb12460.x","article-title":"Sonar evidence of early pregnancy failure in patients with twin conceptions","volume":"84","author":"Robinson","year":"1977","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib88","first-page":"179","article-title":"The vanishing twin","volume":"31","author":"Landy","year":"1982","journal-title":"Acta Genet Med Gemellol (Roma)"},{"key":"10.1016\/j.ajog.2015.10.930_bib89","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/0002-9378(86)90068-2","article-title":"The \u201cvanishing twin\u201d: ultrasonographic assessment of fetal disappearance in the first trimester","volume":"155","author":"Landy","year":"1986","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib90","doi-asserted-by":"crossref","first-page":"880","DOI":"10.1093\/oxfordjournals.humrep.a137202","article-title":"The probability of multiple births when multiple gestational sacs of viable embryos are diagnosed at first trimester ultrasound","volume":"5","author":"Dickey","year":"1990","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib91","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1002\/pd.2445","article-title":"First trimester aneuploidy screening in the presence of a vanishing twin: implications for maternal serum markers","volume":"30","author":"Spencer","year":"2010","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib92","doi-asserted-by":"crossref","first-page":"798","DOI":"10.1093\/humrep\/17.3.798","article-title":"The 'vanishing embryo' phenomenon in an oocyte donation programme","volume":"17","author":"Rodr\u00edguez-Gonz\u00e1lez","year":"2002","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib93","doi-asserted-by":"crossref","first-page":"116","DOI":"10.1016\/j.fertnstert.2013.02.057","article-title":"Early beta-human chorionic gonadotropin trends in vanishing twin pregnancies","volume":"100","author":"Brady","year":"2013","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib94","doi-asserted-by":"crossref","first-page":"2821","DOI":"10.1093\/humrep\/dei142","article-title":"Consequences of vanishing twins in IVF\/ICSI pregnancies","volume":"20","author":"Pinborg","year":"2005","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib95","doi-asserted-by":"crossref","first-page":"2707","DOI":"10.1093\/humrep\/dem225","article-title":"Vanishing twins: a predictor of small-for-gestational age in IVF singletons","volume":"22","author":"Pinborg","year":"2007","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib96","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1067\/mob.2002.118915","article-title":"Spontaneous reduction of multiple pregnancy: incidence and effect on outcome","volume":"186","author":"Dickey","year":"2002","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib97","doi-asserted-by":"crossref","first-page":"814","DOI":"10.1016\/j.ajog.2006.06.022","article-title":"Are in\u00a0vitro fertilization pregnancies with early spontaneous reduction high risk?","volume":"195","author":"Chasen","year":"2006","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib98","doi-asserted-by":"crossref","first-page":"310","DOI":"10.1016\/j.fertnstert.2007.06.048","article-title":"Birth weight is lower for survivors of the vanishing twin syndrome: a case-control study","volume":"90","author":"Shebl","year":"2008","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib99","doi-asserted-by":"crossref","first-page":"256","DOI":"10.1016\/j.rbmo.2009.11.015","article-title":"Adverse obstetric outcome for the vanishing twin syndrome","volume":"20","author":"Almog","year":"2010","journal-title":"Reprod Biomed Online"},{"key":"10.1016\/j.ajog.2015.10.930_bib100","doi-asserted-by":"crossref","first-page":"202","DOI":"10.1375\/twin.10.1.202","article-title":"Vanishing twin: a possible cause of cerebral impairment","volume":"10","author":"Anand","year":"2007","journal-title":"Twin Res Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib101","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1111\/j.1469-8749.1997.tb07434.x","article-title":"A\u00a0hypothesis for the aetiology of spastic cerebral palsy - the vanishing twin","volume":"39","author":"Pharoah","year":"1997","journal-title":"Dev Med Child Neurol"},{"key":"10.1016\/j.ajog.2015.10.930_bib102","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1375\/136905203321536191","article-title":"A\u00a0case-control study of vanishing twin as a risk factor for cerebral palsy","volume":"6","author":"Newton","year":"2003","journal-title":"Twin Res"},{"key":"10.1016\/j.ajog.2015.10.930_bib103","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1375\/twin.11.1.93","article-title":"Psychological vulnerability of singleton children after the 'vanishing' of a co-twin following assisted reproduction","volume":"11","author":"De Pascalis","year":"2008","journal-title":"Twin Res Hum Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib104","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1002\/pd.4492","article-title":"First and second trimester maternal serum markers in pregnancies with a vanishing twin","volume":"35","author":"Huang","year":"2015","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib105","doi-asserted-by":"crossref","first-page":"1128","DOI":"10.1111\/jog.12314","article-title":"Vanishing twin as a potential source of bias in non-invasive fetal sex determination: a case report","volume":"40","author":"Vlkov\u00e1","year":"2014","journal-title":"J\u00a0Obstet Gynaecol Res"},{"key":"10.1016\/j.ajog.2015.10.930_bib106","article-title":"Pitfalls\u00a0in noninvasive fetal RhD and sex determination due to a vanishing twin","author":"Masala","year":"2014","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib107","doi-asserted-by":"crossref","first-page":"79.e1","DOI":"10.1016\/j.ajog.2014.10.012","article-title":"Detection of triploid, molar, and vanishing twin pregnancies by a single-nucleotide polymorphism\u2013based noninvasive prenatal test","volume":"212","author":"Curnow","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib108","first-page":"93","article-title":"Coexistence of aplasia cutis congenita, faun tail nevus and fetus papyraceus","volume":"7","author":"\u00dcst\u00fcner","year":"2013","journal-title":"J\u00a0Dermatol Case Rep"},{"key":"10.1016\/j.ajog.2015.10.930_bib109","doi-asserted-by":"crossref","first-page":"598","DOI":"10.1136\/pgmj.59.695.598","article-title":"Fetus papyraceus\u201311 cases","volume":"59","author":"Daw","year":"1983","journal-title":"Postgrad Med J"},{"key":"10.1016\/j.ajog.2015.10.930_bib110","article-title":"Fetus papyraceus: congenital pulmonary anomalies associated with congenital aplasia cutis on the surviving twin","volume":"30","author":"Lagier","year":"2013","journal-title":"Pediatr Dermatol"},{"key":"10.1016\/j.ajog.2015.10.930_bib111","doi-asserted-by":"crossref","first-page":"1419","DOI":"10.1111\/j.1365-4632.2012.05545.x","article-title":"Aplasia cutis congenita with fetus papyraceus: report and review of the literature","volume":"51","author":"Tempark","year":"2012","journal-title":"Int J Dermatol"},{"key":"10.1016\/j.ajog.2015.10.930_bib112","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1111\/pde.12228","article-title":"Aplasia cutis congenita in a setting of fetus papyraceus associated with small fetal abdominal circumference and high alpha-fetoprotein and amniotic acetylcholinesterase","volume":"32","author":"Mazza","year":"2015","journal-title":"Pediatr Dermatol"},{"key":"10.1016\/j.ajog.2015.10.930_bib113","first-page":"22","article-title":"A\u00a0case of aplasia cutis congenita in dizygotic twins","volume":"13","author":"Lemke","year":"1993","journal-title":"J\u00a0Perinatol"},{"key":"10.1016\/j.ajog.2015.10.930_bib114","doi-asserted-by":"crossref","first-page":"860","DOI":"10.1016\/j.jpeds.2008.07.009","article-title":"Symmetric truncal aplasia cutis congenita following multifetal reduction of a sextuplet pregnancy","volume":"153","author":"Schaffer","year":"2008","journal-title":"J\u00a0Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib115","doi-asserted-by":"crossref","first-page":"220","DOI":"10.1136\/adc.36.186.220","article-title":"Foetus in foetu and the retroperitoneal teratoma","volume":"36","author":"Lewis","year":"1961","journal-title":"Arch Dis Child"},{"key":"10.1016\/j.ajog.2015.10.930_bib116","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1177\/095952870900100118","article-title":"Case of a foetus found in the abdomen of a boy","volume":"1","author":"Young","year":"1809","journal-title":"Med Chir Trans"},{"key":"10.1016\/j.ajog.2015.10.930_bib117","doi-asserted-by":"crossref","first-page":"1016","DOI":"10.5694\/j.1326-5377.1969.tb49866.x","article-title":"Foetus-in-foetu","volume":"1","author":"Grant","year":"1969","journal-title":"The Medical journal of Australia"},{"key":"10.1016\/j.ajog.2015.10.930_bib118","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1002\/path.1700400102","article-title":"The structure of teratomata","volume":"40","author":"Willis","year":"1935","journal-title":"J\u00a0Pathol Bacteriol"},{"key":"10.1016\/j.ajog.2015.10.930_bib119","doi-asserted-by":"crossref","first-page":"793","DOI":"10.1136\/jcp.25.9.793","article-title":"Foetus in foetu: serological assessment of monozygotic origin by automated analysis","volume":"25","author":"Boyce","year":"1972","journal-title":"J\u00a0Clin Pathol"},{"key":"10.1016\/j.ajog.2015.10.930_bib120","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1002\/(SICI)1097-0223(199701)17:1<13::AID-PD18>3.0.CO;2-#","article-title":"Prenatal diagnosis, pathology, and genetic study of fetus in fetu","volume":"17","author":"Chen","year":"1997","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib121","doi-asserted-by":"crossref","first-page":"288","DOI":"10.1016\/S0022-3468(83)80104-3","article-title":"Fetus in fetu","volume":"18","author":"George","year":"1983","journal-title":"Journal of pediatric surgery"},{"key":"10.1016\/j.ajog.2015.10.930_bib122","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1186\/1471-2431-14-88","article-title":"Fetus in fetu: two case reports and literature review","volume":"14","author":"Ji","year":"2014","journal-title":"BMC Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib123","doi-asserted-by":"crossref","first-page":"1335","DOI":"10.1542\/peds.105.6.1335","article-title":"Fetus in fetu: a case report and literature review","volume":"105","author":"Hoeffel","year":"2000","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2015.10.930_bib124","doi-asserted-by":"crossref","first-page":"1110","DOI":"10.1002\/pd.2629","article-title":"Detection of a prenatal mature tumor arising from the external genitalia in a female fetus: fetus-in-fetu or teratoma?","volume":"30","author":"Derniaux","year":"2010","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2015.10.930_bib125","first-page":"2119","article-title":"Fetus in fetu and teratoma. A case report and review","volume":"48","author":"Du Plessis","year":"1974","journal-title":"S\u00a0Afr Med J"},{"key":"10.1016\/j.ajog.2015.10.930_bib126","doi-asserted-by":"crossref","first-page":"1476","DOI":"10.1016\/S0022-3468(97)90567-4","article-title":"Fetus-in-fetu with malignant recurrence","volume":"32","author":"Hopkins","year":"1997","journal-title":"J\u00a0Pediatr Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib127","doi-asserted-by":"crossref","first-page":"428","DOI":"10.1002\/ca.1079","article-title":"Parasitic conjoined twins: external, internal (fetuses in fetu and teratomas), and detached (acardiacs)","volume":"14","author":"Spencer","year":"2001","journal-title":"Clinical anatomy (New York, NY)"},{"key":"10.1016\/j.ajog.2015.10.930_bib128","doi-asserted-by":"crossref","first-page":"616","DOI":"10.1016\/j.jpedsurg.2003.12.029","article-title":"Fetus in fetu\u2013diagnostic criteria and differential diagnosis\u2013a case report and literature review","volume":"39","author":"Brand","year":"2004","journal-title":"J\u00a0Pediatr Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib129","doi-asserted-by":"crossref","first-page":"17","DOI":"10.3171\/2011.10.PEDS11196","article-title":"Intraventricular twin fetuses in fetu","volume":"9","author":"Huddle","year":"2012","journal-title":"J\u00a0Neurosurg Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib130","doi-asserted-by":"crossref","first-page":"1381","DOI":"10.7863\/jum.2008.27.9.1381","article-title":"Fetus in fetu: 11 fetoid forms in a single fetus: review of the literature and imaging","volume":"27","author":"Gerber","year":"2008","journal-title":"Journal of ultrasound in medicine: official journal of the American Institute of Ultrasound in Medicine"},{"key":"10.1016\/j.ajog.2015.10.930_bib131","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1016\/0022-3468(75)90188-8","article-title":"The clinical features and treatment of fetus in fetu: two case reports and a review of the literature","volume":"10","author":"Knox","year":"1975","journal-title":"J\u00a0Pediatr Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib132","doi-asserted-by":"crossref","first-page":"2212","DOI":"10.7863\/ultra.32.12.2212","article-title":"Prenatal sonographic diagnosis of fetus in fetu","volume":"32","author":"Has","year":"2013","journal-title":"J\u00a0Ultrasound Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib133","article-title":"Fetus in fetu: from prenatal sonographic diagnosis to postnatal confirmation","author":"Song","year":"2014","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2015.10.930_bib134","doi-asserted-by":"crossref","first-page":"943","DOI":"10.1016\/j.jpedsurg.2008.01.061","article-title":"Fetus-in-fetu: report of a case and a review of the literature","volume":"43","author":"Escobar","year":"2008","journal-title":"J\u00a0Pediatr Surg"},{"key":"10.1016\/j.ajog.2015.10.930_bib135","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1007\/BF02726631","volume":"56","author":"Bhat","year":"1989","journal-title":"Superfoetation. Indian J Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib136","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1136\/adc.55.4.281","article-title":"Gestational age in twins","volume":"55","author":"James","year":"1980","journal-title":"Arch Dis Child"},{"key":"10.1016\/j.ajog.2015.10.930_bib137","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1007\/s00404-002-0349-9","article-title":"Superfetation in uterus pseudo didelphys: an unreported event","volume":"268","author":"Singhal","year":"2003","journal-title":"Arch Gynecol Obstet"},{"key":"10.1016\/j.ajog.2015.10.930_bib138","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1111\/j.1469-185X.2010.00135.x","article-title":"The concept of superfetation: a critical review on a \u2018myth\u2019 in mammalian reproduction","volume":"86","author":"Roellig","year":"2011","journal-title":"Biol Rev Camb Philos Soc"},{"key":"10.1016\/j.ajog.2015.10.930_bib139","doi-asserted-by":"crossref","first-page":"1012","DOI":"10.1071\/RD12238","article-title":"Unpredicted ovulations and conceptions during early pregnancy: an explanatory mechanism of human superfetation","volume":"25","author":"Tar\u00edn","year":"2013","journal-title":"Reprod Fertil Dev"},{"key":"10.1016\/j.ajog.2015.10.930_bib140","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1080\/jmf.14.4.217.219","article-title":"Superfecundation and superfetation: Lessons from the past on early human development","volume":"14","author":"Blickstein","year":"2003","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib141","doi-asserted-by":"crossref","first-page":"254","DOI":"10.1016\/j.jpeds.2005.04.038","article-title":"Superfetation as a cause of growth discordance in a multiple pregnancy","volume":"147","author":"Harrison","year":"2005","journal-title":"J\u00a0Pediatr"},{"key":"10.1016\/j.ajog.2015.10.930_bib142","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1016\/S0015-0282(01)01976-8","article-title":"Monopaternal superfecundation of quintuplets after transfer of two embryos in an in\u00a0vitro fertilization cycle","volume":"76","author":"Amsalem","year":"2001","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib143","doi-asserted-by":"crossref","first-page":"2124.e13","DOI":"10.1016\/j.fertnstert.2011.01.029","article-title":"Quintuplets after a transfer of two embryos following in\u00a0vitro fertilization: a proved superfecundation","volume":"95","author":"Peign\u00e9","year":"2011","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib144","doi-asserted-by":"crossref","first-page":"590","DOI":"10.1056\/NEJM197809142991108","article-title":"Twins with two different fathers identified by HLA","volume":"299","author":"Terasaki","year":"1978","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib145","first-page":"39","article-title":"Superfecundation","volume":"27","author":"Harris","year":"1982","journal-title":"J\u00a0Reprod Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib146","doi-asserted-by":"crossref","first-page":"1159","DOI":"10.1016\/S0015-0282(97)81456-2","article-title":"Indisputable double paternity in dizygous twins","volume":"67","author":"Girela","year":"1997","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib147","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1111\/j.1365-3148.1991.tb00041.x","article-title":"Superfecundation identified by HLA, protein, and VNTR DNA polymorphisms","volume":"1","author":"Wenk","year":"1991","journal-title":"Transfus Med"},{"key":"10.1016\/j.ajog.2015.10.930_bib148","first-page":"257","article-title":"The incidence of superfecundation and of double paternity in the general population","volume":"42","author":"James","year":"1993","journal-title":"Acta Genet Med Gemellol (Roma)"},{"key":"10.1016\/j.ajog.2015.10.930_bib149","doi-asserted-by":"crossref","first-page":"S91","DOI":"10.1016\/j.ajog.2015.06.054","article-title":"Anomalies of the placenta and umbilical cord in twin gestations","volume":"213","author":"Hubinont","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib150","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1016\/S0015-0282(16)53780-7","article-title":"Double fertilization in\u00a0vitro and the origin of human chimerism","volume":"54","author":"Van de Leur","year":"1990","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ajog.2015.10.930_bib151","doi-asserted-by":"crossref","first-page":"2575","DOI":"10.1093\/humrep\/13.9.2575","article-title":"Intracytoplasmic sperm injection allows fertilization and development of a chromosomally balanced embryo from a binovular zona pellucida","volume":"13","author":"Safran","year":"1998","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib152","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1023\/A:1020537812619","article-title":"Fertilization and development of a\u00a0blastocyst-stage embryo after selective intracytoplasmic sperm injection of a mature oocyte from a binovular zona pellucida: a case report","volume":"16","author":"Vicdan","year":"1999","journal-title":"J\u00a0Assist Reprod Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib153","doi-asserted-by":"crossref","first-page":"117","DOI":"10.2106\/00004623-197557010-00022","article-title":"Mirror-image coxa vara in identical twins","volume":"57","author":"Letts","year":"1975","journal-title":"J\u00a0Bone Joint Surg Am"},{"key":"10.1016\/j.ajog.2015.10.930_bib154","doi-asserted-by":"crossref","first-page":"615","DOI":"10.1111\/j.1464-410X.1993.tb16041.x","article-title":"Posterior urethral valves in twins with mirror image abnormalities","volume":"71","author":"Williams","year":"1993","journal-title":"Br J Urol"},{"key":"10.1016\/j.ajog.2015.10.930_bib155","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1159\/000050904","article-title":"Mirror image myopic anisometropia in two pairs of monozygotic twins","volume":"215","author":"Okamoto","year":"2001","journal-title":"Ophthalmologica"},{"key":"10.1016\/j.ajog.2015.10.930_bib156","doi-asserted-by":"crossref","first-page":"210","DOI":"10.1002\/ajmg.10563","article-title":"Posterior urethral valves and mirror image anomalies in monozygotic twins","volume":"111","author":"Morini","year":"2002","journal-title":"Am J Med Genet"},{"key":"10.1016\/j.ajog.2015.10.930_bib157","doi-asserted-by":"crossref","first-page":"1347","DOI":"10.1093\/oxfordjournals.humrep.a019385","article-title":"Spontaneous conception and intrauterine pregnancy in a symptomatic missed abortion of ectopic pregnancy conceived in the previous cycle","volume":"11","author":"Kobayashi","year":"1996","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ajog.2015.10.930_bib158","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1046\/j.1469-0705.1999.14030219.x","article-title":"Spontaneous superfetation diagnosed in the first trimester with successful outcome","volume":"14","author":"Tuppen","year":"1999","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2015.10.930_bib159","first-page":"319","article-title":"Observations showing that a white woman, by intercourse with a white man and a Negro man, conceive twins, one of which shall be white and the other mulatto","volume":"3d","author":"Archer","year":"1810","journal-title":"Med Repository"},{"key":"10.1016\/j.ajog.2015.10.930_bib160","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/0140-6736(92)90193-7","article-title":"Twins with different fathers","volume":"339","author":"Verma","year":"1992","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2015.10.930_bib161","doi-asserted-by":"crossref","first-page":"1100","DOI":"10.1520\/JFS13689J","article-title":"Paternity identification in twins with different fathers","volume":"39","author":"Lu","year":"1994","journal-title":"J\u00a0Forensic Sci"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937815022358?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937815022358?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T11:07:39Z","timestamp":1757588859000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937815022358"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,2]]},"references-count":161,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2016,2]]}},"alternative-id":["S0002937815022358"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2015.10.930","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2016,2]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"A review of the mechanisms and evidence for typical and atypical twinning","name":"articletitle","label":"Article Title"},{"value":"American Journal of Obstetrics and Gynecology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajog.2015.10.930","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2016 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}