{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T01:24:45Z","timestamp":1771550685063,"version":"3.50.1"},"reference-count":26,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2021,6,1]],"date-time":"2021-06-01T00:00:00Z","timestamp":1622505600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,6,1]],"date-time":"2021-06-01T00:00:00Z","timestamp":1622505600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000226","name":"Ontario Ministry of Health and Long-Term Care","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000226","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003579","name":"University of Toronto","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003579","id-type":"DOI","asserted-by":"publisher"}]}],"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":[[2021,6]]},"DOI":"10.1016\/j.ajog.2020.12.002","type":"journal-article","created":{"date-parts":[[2020,12,9]],"date-time":"2020-12-09T00:17:37Z","timestamp":1607473057000},"page":"613.e1-613.e10","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":15,"title":["Mode of delivery and neonatal outcomes in extremely preterm Vertex\/nonVertex twins"],"prefix":"10.1016","volume":"224","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4443-388X","authenticated-orcid":false,"given":"Liran","family":"Hiersch","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prakesh S.","family":"Shah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Faiza","family":"Khurshid","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edith","family":"Masse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kellie","family":"Murphy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sarah D.","family":"McDonald","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"George","family":"Carson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jon","family":"Barrett","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nir","family":"Melamed","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prakesh S.","family":"Shah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Ting","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zenon","family":"Cieslak","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca","family":"Sherlock","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ayman","family":"Abou Mehrem","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jennifer","family":"Toye","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos","family":"Fajardo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zarin","family":"Kalapesi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaya","family":"Bodani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Koravangattu","family":"Sankaran","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sibasis","family":"Daspal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mary","family":"Seshia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Deepak","family":"Louis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruben","family":"Alvaro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit","family":"Mukerji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Orlando","family":"Da Silva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammad","family":"Adie","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyong-Soon","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Dunn","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brigitte","family":"Lemyre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Faiza","family":"Khurshid","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ermelinda","family":"Pelausa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keith","family":"Barrington","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anie","family":"Lapoint","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guillaume","family":"Ethier","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"Drolet","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruno","family":"Piedboeuf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martine","family":"Claveau","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marc","family":"Beltempo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Valerie","family":"Bertelle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edith","family":"Masse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roderick","family":"Canning","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hala","family":"Makary","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cecil","family":"Ojah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luis","family":"Monterrosa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julie","family":"Emberley","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jehier","family":"Afifi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrzej","family":"Kajetanowicz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shoo K.","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haim","family":"Abenhaim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jehier","family":"Afifi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruben","family":"Alvaro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Andrews","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anthony","family":"Armson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francois","family":"Audibert","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Khalid","family":"Aziz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marilyn","family":"Ballantyne","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jon","family":"Barrett","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marc","family":"Beltempo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anick","family":"Berard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Valerie","family":"Bertelle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lucie","family":"Blais","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alan","family":"Bocking","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaya","family":"Bodani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jason","family":"Burrows","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kimberly","family":"Butt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roderick","family":"Canning","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"George","family":"Carson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nils","family":"Chaillet","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sue","family":"Chandra","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paige","family":"Church","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zenon","family":"Cieslak","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kevin","family":"Coughlin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joan","family":"Crane","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dianne","family":"Creighton","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Orlando","family":"Da Silva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thierry","family":"Daboval","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leanne","family":"Dahlgren","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sibasis","family":"Daspal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cecilia","family":"de Cabo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akhil","family":"Deshpandey","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kimberly","family":"Dow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"Drolet","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Dunn","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Salhab","family":"el Helou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Darine","family":"El-Chaar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Walid","family":"El-Naggar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos","family":"Fajardo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan","family":"Foster","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Gagnon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rob","family":"Gratton","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Victor","family":"Han","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adele","family":"Harrison","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shabih","family":"Hasan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Helewa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew","family":"Hicks","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.S.","family":"Joseph","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrzej","family":"Kajetanowicz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zarin","family":"Kalapesi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thierry","family":"Lacaze-Masmonteil","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyong-Soon","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brigitte","family":"Lemyre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abhay","family":"Lodha","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Deepak","family":"Louis","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thuy Mai","family":"Luu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Linh","family":"Ly","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Annette","family":"Majnemer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hala","family":"Makary","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isabelle","family":"Marc","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edith","family":"Masse","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sarah D.","family":"McDonald","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Doug","family":"McMillan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nir","family":"Melamed","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amy","family":"Metcalfe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Diane","family":"Moddemann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luis","family":"Monterrosa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michelle","family":"Morais","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit","family":"Mukerji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Mundle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lynn","family":"Murphy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kellie","family":"Murphy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne-Monique","family":"Nuyt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chuks","family":"Nwaesei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karel","family":"O\u2019Brien","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Offringa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cecil","family":"Ojah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Annie","family":"Ouellet","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jean-Charles","family":"Pasquier","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Petros","family":"Pechlivanoglou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ermelinda","family":"Pelausa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruno","family":"Piedboeuf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elodie","family":"Portales-Casamar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shahirose","family":"Premji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pramod","family":"Puligandla","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eleanor","family":"Pullenayegum","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amber","family":"Reichert","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kate","family":"Robson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carol","family":"Schneider","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mary","family":"Seshia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prakesh S.","family":"Shah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vibhuti","family":"Shah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca","family":"Sherlock","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandesh","family":"Shivananda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nalini","family":"Singhal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erik","family":"Skarsgard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda","family":"Skoll","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Graeme","family":"Smith","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne","family":"Synnes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katherine","family":"Th\u00e9riault","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Ting","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suzanne","family":"Tough","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jennifer","family":"Toye","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jagdeep","family":"Ubhi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"Vincer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wendy","family":"Whittle","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hilary","family":"Whyte","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Doug","family":"Wilson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephen","family":"Wood","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philip","family":"Ye","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wendy","family":"Yee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jill","family":"Zwicker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2020.12.002_bib1","first-page":"109","article-title":"An evidence-based approach to determining route of delivery for twin gestations","volume":"4","author":"Christopher","year":"2011","journal-title":"Rev Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib2","doi-asserted-by":"crossref","first-page":"1337","DOI":"10.1213\/ANE.0000000000000705","article-title":"Outcomes for extremely premature infants","volume":"120","author":"Glass","year":"2015","journal-title":"Anesth Analg"},{"key":"10.1016\/j.ajog.2020.12.002_bib3","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1016\/j.siny.2015.12.010","article-title":"Multiple gestations and preterm birth","volume":"21","author":"Fuchs","year":"2016","journal-title":"Semin Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2020.12.002_bib4","doi-asserted-by":"crossref","first-page":"579","DOI":"10.1007\/s00404-018-4847-9","article-title":"Incidence and risk factors for gestational diabetes mellitus in twin versus singleton pregnancies","volume":"298","author":"Hiersch","year":"2018","journal-title":"Arch Gynecol Obstet"},{"key":"10.1016\/j.ajog.2020.12.002_bib5","first-page":"1","article-title":"Births: final data for 2016","volume":"67","author":"Martin","year":"2018","journal-title":"Natl Vital Stat Rep"},{"key":"10.1016\/j.ajog.2020.12.002_bib6","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1375\/twin.4.3.165","article-title":"Controversial issues in the management of multiple pregnancies","volume":"4","author":"Blickstein","year":"2001","journal-title":"Twin Res"},{"key":"10.1016\/j.ajog.2020.12.002_bib7","doi-asserted-by":"crossref","first-page":"523","DOI":"10.1111\/j.1471-0528.2010.02836.x","article-title":"Neonatal outcomes of twins according to birth order, presentation and mode of delivery: a systematic review and meta-analysis","volume":"118","author":"Rossi","year":"2011","journal-title":"BJOG"},{"key":"10.1016\/j.ajog.2020.12.002_bib8","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1186\/s12884-017-1554-7","article-title":"What is the safest mode of delivery for extremely preterm cephalic\/non-cephalic twin pairs? A systematic review and meta-analyses","volume":"17","author":"Dagenais","year":"2017","journal-title":"BMC Pregnancy Childbirth"},{"key":"10.1016\/j.ajog.2020.12.002_bib9","doi-asserted-by":"crossref","first-page":"449.e1","DOI":"10.1016\/j.ajog.2018.01.023","article-title":"Neonatal morbidity associated with vaginal delivery of noncephalic second twins","volume":"218","author":"Schmitz","year":"2018","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib10","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1016\/0002-9378(86)90648-4","article-title":"Has use of cesarean section reduced the risks of delivery in the preterm breech presentation?","volume":"154","author":"Bodmer","year":"1986","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib11","doi-asserted-by":"crossref","first-page":"1419","DOI":"10.3109\/14767051003678218","article-title":"Method of delivery and intraventricular haemorrhage in extremely preterm infants","volume":"23","author":"Dani","year":"2010","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2020.12.002_bib12","first-page":"253","article-title":"Long bone fractures in extreme low birth weight infants at birth: obstetrical considerations","volume":"21","author":"Garc\u00eda","year":"2002","journal-title":"P\u00a0R Health Sci J"},{"key":"10.1016\/j.ajog.2020.12.002_bib13","doi-asserted-by":"crossref","first-page":"225","DOI":"10.1136\/bmj.301.6745.225","article-title":"Fractures of long bones occurring in neonatal intensive therapy units","volume":"301","author":"Phillips","year":"1990","journal-title":"BMJ"},{"key":"10.1016\/j.ajog.2020.12.002_bib14","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1016\/j.bpobgyn.2013.12.008","article-title":"Twin delivery: method, timing and conduct","volume":"28","author":"Barrett","year":"2014","journal-title":"Best Pract Res Clin Obstet Gynaecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib15","doi-asserted-by":"crossref","first-page":"1295","DOI":"10.1056\/NEJMoa1214939","article-title":"A\u00a0randomized trial of planned cesarean or vaginal delivery for twin pregnancy","volume":"369","author":"Barrett","year":"2013","journal-title":"N\u00a0Engl J Med"},{"key":"10.1016\/j.ajog.2020.12.002_bib16","doi-asserted-by":"crossref","first-page":"219.e1","DOI":"10.1016\/j.ajog.2015.03.030","article-title":"Mode of delivery of twin gestation with very low birthweight: is vaginal delivery safe?","volume":"213","author":"Barzilay","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib17","doi-asserted-by":"crossref","first-page":"840","DOI":"10.1016\/j.ajog.2004.09.132","article-title":"Neonatal death and morbidity in vertex-nonvertex second twins according to mode of delivery and birth weight","volume":"192","author":"Yang","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib18","doi-asserted-by":"crossref","first-page":"682","DOI":"10.1080\/14767058.2017.1295441","article-title":"Neonatal outcomes of preterm twins according to mode of birth and presentation","volume":"31","author":"Hunter","year":"2018","journal-title":"J\u00a0Matern Fetal Neonatal Med"},{"key":"10.1016\/j.ajog.2020.12.002_bib19","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1542\/peds.2007-2620","article-title":"Impact of cesarean section on neonatal mortality rates among very preterm infants in the United States, 2000-2003","volume":"122","author":"Malloy","year":"2008","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2020.12.002_bib20","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/j.gyobfe.2010.11.007","article-title":"Pr\u00e9sentations et modes d'accouchements de 371 grossesses g\u00e9mellaires [Modes of deliveries of twins as a function of their presentation. A study of 371 pregnancies]","volume":"39","author":"Boukerrou","year":"2011","journal-title":"Gynecol Obstet Fertil"},{"key":"10.1016\/j.ajog.2020.12.002_bib21","doi-asserted-by":"crossref","first-page":"405","DOI":"10.1016\/0002-9378(84)90716-6","article-title":"Fetal lung maturation in twin gestation","volume":"148","author":"Leveno","year":"1984","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2020.12.002_bib22","doi-asserted-by":"crossref","first-page":"1241","DOI":"10.1055\/s-0037-1603325","article-title":"Internal audit of the Canadian Neonatal Network data collection system","volume":"34","author":"Shah","year":"2017","journal-title":"Am J Perinatol"},{"key":"10.1016\/j.ajog.2020.12.002_bib23","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1016\/S0022-3476(78)80282-0","article-title":"Incidence and evolution of subependymal and intraventricular hemorrhage: a study of infants with birth weights less than 1,500 gm","volume":"92","author":"Papile","year":"1978","journal-title":"J\u00a0Pediatr"},{"key":"10.1016\/j.ajog.2020.12.002_bib24","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1542\/peds.82.4.527","article-title":"Abnormal pulmonary outcomes in premature infants: prediction from oxygen requirement in the neonatal period","volume":"82","author":"Shennan","year":"1988","journal-title":"Pediatrics"},{"key":"10.1016\/j.ajog.2020.12.002_bib25","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.2020.12.002_bib26","doi-asserted-by":"crossref","first-page":"E35","DOI":"10.1542\/peds.108.2.e35","article-title":"A\u00a0new and improved population-based Canadian reference for birth weight for gestational age","volume":"108","author":"Kramer","year":"2001","journal-title":"Pediatrics"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937820313685?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937820313685?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T11:32:08Z","timestamp":1757590328000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937820313685"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,6]]},"references-count":26,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,6]]}},"alternative-id":["S0002937820313685"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2020.12.002","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2021,6]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Mode of delivery and neonatal outcomes in extremely preterm Vertex\/nonVertex twins","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.2020.12.002","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2020 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}