{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T10:13:45Z","timestamp":1791454425142,"version":"4.3.3"},"reference-count":28,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[2021,2,1]],"date-time":"2021-02-01T00:00:00Z","timestamp":1612137600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,2,1]],"date-time":"2021-02-01T00:00:00Z","timestamp":1612137600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2020,8,5]],"date-time":"2020-08-05T00:00:00Z","timestamp":1596585600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"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":[[2021,2]]},"DOI":"10.1016\/j.ajog.2020.07.041","type":"journal-article","created":{"date-parts":[[2020,7,27]],"date-time":"2020-07-27T12:55:13Z","timestamp":1595854513000},"page":"213.e1-213.e11","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":49,"title":["Spontaneous twin anemia polycythemia sequence: diagnosis, management, and outcome in an international cohort of 249 cases"],"prefix":"10.1016","volume":"224","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2078-2295","authenticated-orcid":false,"given":"Lisanne S.A.","family":"Tollenaar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Femke","family":"Slaghekke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liesbeth","family":"Lewi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire","family":"Colmant","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariano","family":"Lanna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne Sophie","family":"Weingertner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Greg","family":"Ryan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Ar\u00e9valo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Klaritsch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuela","family":"Tavares de Sousa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asma","family":"Khalil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ramesha","family":"Papanna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Glenn J.","family":"Gardener","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisa","family":"Bevilacqua","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kirill V.","family":"Kostyukov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mert O.","family":"Bahtiyar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark D.","family":"Kilby","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eleonor","family":"Tiblad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dick","family":"Oepkes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enrico","family":"Lopriore","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2020.07.041_bib1","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/j.placenta.2006.01.010","article-title":"Twin anemia-polycythemia sequence in two monochorionic twin pairs without oligo-polyhydramnios sequence","volume":"28","author":"Lopriore","year":"2007","journal-title":"Placenta"},{"key":"10.1016\/j.ajog.2020.07.041_bib2","doi-asserted-by":"crossref","first-page":"514.e1","DOI":"10.1016\/j.ajog.2008.03.050","article-title":"The outcome of monochorionic diamniotic twin gestations in the era of invasive fetal therapy: a prospective cohort study","volume":"199","author":"Lewi","year":"2008","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib3","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1017\/thg.2016.18","article-title":"Twin anemia polycythemia sequence: current views on pathogenesis, diagnostic criteria, perinatal management, and outcome","volume":"19","author":"Tollenaar","year":"2016","journal-title":"Twin Res Hum Genet"},{"key":"10.1016\/j.ajog.2020.07.041_bib4","doi-asserted-by":"crossref","first-page":"981","DOI":"10.1016\/j.jogc.2018.04.005","article-title":"Intrauterine interventions for the treatment of twin anemia-polycythemia sequence: a systematic review","volume":"41","author":"Hill","year":"2019","journal-title":"J\u00a0Obstet Gynaecol Can"},{"key":"10.1016\/j.ajog.2020.07.041_bib5","doi-asserted-by":"crossref","first-page":"54.e1","DOI":"10.1016\/j.ajog.2010.02.032","article-title":"Clinical outcome in neonates with twin anemia-polycythemia sequence","volume":"203","author":"Lopriore","year":"2010","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib6","doi-asserted-by":"crossref","first-page":"702","DOI":"10.1002\/uog.12337","article-title":"Severe cerebral injury in a recipient with twin anemia-polycythemia sequence","volume":"41","author":"Lopriore","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib7","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1159\/000441451","article-title":"Twin anemia-polycythemia sequence: perinatal management and outcome","volume":"40","author":"Ashwal","year":"2016","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2020.07.041_bib8","first-page":"1759","article-title":"Post-laser twin anemia polycythemia sequence: management and outcome in a large international cohort of 164 cases","volume":"9","author":"Tollenaar","year":"2020","journal-title":"J\u00a0Clin Med"},{"key":"10.1016\/j.ajog.2020.07.041_bib9","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1002\/uog.14925","article-title":"Middle cerebral artery peak systolic velocity to predict fetal hemoglobin levels in twin anemia-polycythemia sequence","volume":"46","author":"Slaghekke","year":"2015","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib10","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1002\/pd.2453","article-title":"Hematological characteristics in neonates with twin anemia-polycythemia sequence (TAPS)","volume":"30","author":"Lopriore","year":"2010","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.ajog.2020.07.041_bib11","first-page":"e3208","article-title":"Accurate and simple evaluation of vascular anastomoses in monochorionic placentas using colored dye","volume":"55","author":"Lopriore","year":"2011","journal-title":"J\u00a0Vis Exp"},{"key":"10.1016\/j.ajog.2020.07.041_bib12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1097\/00000658-197801000-00001","article-title":"Neonatal necrotizing enterocolitis. Therapeutic decisions based upon clinical staging","volume":"187","author":"Bell","year":"1978","journal-title":"Ann Surg"},{"key":"10.1016\/j.ajog.2020.07.041_bib13","doi-asserted-by":"crossref","first-page":"1130","DOI":"10.1001\/archopht.1984.01040030908011","article-title":"An international classification of retinopathy of prematurity. The Committee for the Classification of Retinopathy of Prematurity","volume":"102","year":"1984","journal-title":"Arch Ophthalmol"},{"key":"10.1016\/j.ajog.2020.07.041_bib14","doi-asserted-by":"crossref","first-page":"387","DOI":"10.1016\/S0095-5108(18)30638-9","article-title":"Intraventricular hemorrhage and brain injury in the premature infant. Diagnosis, prognosis, and prevention","volume":"16","author":"Volpe","year":"1989","journal-title":"Clin Perinatol"},{"key":"10.1016\/j.ajog.2020.07.041_bib15","doi-asserted-by":"crossref","first-page":"900","DOI":"10.1136\/adc.56.12.900","article-title":"Measurement of the growth of the lateral ventricles in preterm infants with real-time ultrasound","volume":"56","author":"Levene","year":"1981","journal-title":"Arch Dis Child"},{"key":"10.1016\/j.ajog.2020.07.041_bib16","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0166-4328(05)80189-5","article-title":"The spectrum of leukomalacia using cranial ultrasound","volume":"49","author":"de Vries","year":"1992","journal-title":"Behav Brain Res"},{"key":"10.1016\/j.ajog.2020.07.041_bib17","doi-asserted-by":"crossref","first-page":"383.e1","DOI":"10.1016\/j.ajog.2018.12.023","article-title":"From population reference to national standard: new and improved birthweight charts","volume":"220","author":"Hoftiezer","year":"2019","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib18","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1159\/000304512","article-title":"Twin anemia-polycythemia sequence: diagnostic criteria, classification, perinatal management and outcome","volume":"27","author":"Slaghekke","year":"2010","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.ajog.2020.07.041_bib19","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1002\/uog.20846","article-title":"High risk of long-term impairment in donor twins with spontaneous twin anemia polycythemia sequence","volume":"5","author":"Tollenaar","year":"2020","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib20","doi-asserted-by":"crossref","DOI":"10.1002\/uog.22042","article-title":"Treatment and outcome in 370 cases with spontaneous and post-laser twin anemia polycythemia sequence managed in 17 different fetal therapy centers","author":"Tollenaar","year":"2020","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib21","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.placenta.2009.11.009","article-title":"Arterio-arterial anastomoses do not prevent the development of twin anemia-polycythemia sequence","volume":"31","author":"van Meir","year":"2010","journal-title":"Placenta"},{"key":"10.1016\/j.ajog.2020.07.041_bib22","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1016\/j.placenta.2013.02.005","article-title":"Placental characteristics in monochorionic twins with spontaneous versus post-laser twin anemia-polycythemia sequence","volume":"34","author":"de Villiers","year":"2013","journal-title":"Placenta"},{"key":"10.1016\/j.ajog.2020.07.041_bib23","doi-asserted-by":"crossref","first-page":"e4","DOI":"10.1016\/j.ajog.2007.08.073","article-title":"Fetoscopic laser treatment of twin-to-twin transfusion syndrome followed by severe twin anemia-polycythemia sequence with spontaneous resolution","volume":"198","author":"Lopriore","year":"2008","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib24","doi-asserted-by":"crossref","first-page":"790","DOI":"10.1016\/j.ajog.2005.08.062","article-title":"Intertwin anastomoses in monochorionic placentas after fetoscopic laser coagulation for twin-to-twin transfusion syndrome: is there more than meets the eye?","volume":"194","author":"Lewi","year":"2006","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib25","doi-asserted-by":"crossref","first-page":"1059","DOI":"10.1016\/j.placenta.2015.07.127","article-title":"\u2018Superficial\u2019 anastomoses in monochorionic placentas are not always superficial","volume":"36","author":"Zhao","year":"2015","journal-title":"Placenta"},{"key":"10.1016\/j.ajog.2020.07.041_bib26","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1002\/uog.15821","article-title":"ISUOG Practice Guidelines: role of ultrasound in twin pregnancy","volume":"47","author":"Khalil","year":"2016","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib27","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/j.ajog.2012.10.880","article-title":"Twin-twin transfusion syndrome","volume":"208","author":"Simpson","year":"2013","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.07.041_bib28","unstructured":"The TAPS Trial - Fetoscopic Laser Surgery for Twin Anemia Polycythemia Sequence. Available at: https:\/\/clinicaltrials.gov\/ct2\/show\/NCT04432168 Accessed August 25, 2020."}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937820307730?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937820307730?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T11:29:58Z","timestamp":1757590198000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937820307730"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,2]]},"references-count":28,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021,2]]}},"alternative-id":["S0002937820307730"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2020.07.041","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2021,2]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Spontaneous twin anemia polycythemia sequence: diagnosis, management, and outcome in an international cohort of 249 cases","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.2020.07.041","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2020 The Authors. Published by Elsevier Inc.","name":"copyright","label":"Copyright"}]}}