{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T13:47:28Z","timestamp":1770040048675,"version":"3.49.0"},"reference-count":29,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2018,12,1]],"date-time":"2018-12-01T00:00:00Z","timestamp":1543622400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2018,12,1]],"date-time":"2018-12-01T00:00:00Z","timestamp":1543622400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","ejog.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Obstetrics &amp; Gynecology and Reproductive Biology"],"published-print":{"date-parts":[[2018,12]]},"DOI":"10.1016\/j.ejogrb.2018.11.007","type":"journal-article","created":{"date-parts":[[2018,11,6]],"date-time":"2018-11-06T11:39:49Z","timestamp":1541504389000},"page":"255-261","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":18,"special_numbering":"C","title":["Outcomes of singleton versus twin pregnancies in the fifth and sixth decades"],"prefix":"10.1016","volume":"231","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0720-4343","authenticated-orcid":false,"given":"Raanan","family":"Meyer","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raoul","family":"Orvieto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ariel","family":"Israel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aya","family":"Mohr-Sasson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yael","family":"Timerman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tal","family":"Gorodesky","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shlomo","family":"Toussia-Cohen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Israel","family":"Hendler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michal J.","family":"Simchen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ronit","family":"Machtinger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.ejogrb.2018.11.007_bib0005","doi-asserted-by":"crossref","first-page":"1410","DOI":"10.1097\/01.AOG.0000163256.83313.36","article-title":"The perinatal effects of delayed childbearing","volume":"105","author":"Joseph","year":"2005","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0010","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1186\/1471-2393-13-80","article-title":"Very advanced maternal age and morbidity in Victoria, Australia: a population based study","volume":"13","author":"Carolan","year":"2013","journal-title":"BMC Pregnancy Childbirth"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0015","first-page":"129","article-title":"The changing epidemiology of multiple births in the United States","volume":"101","author":"Russell","year":"2003","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0020","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1093\/humupd\/5.2.179","article-title":"The epidemiology of multiple births","volume":"5","author":"Bortolus","year":"1999","journal-title":"Hum Reprod Update"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0025","doi-asserted-by":"crossref","first-page":"899","DOI":"10.1097\/00006250-200006000-00022","article-title":"Maternal morbidity and mortality associated with multiple gestations","volume":"95","author":"Conde-Agudelo","year":"2000","journal-title":"Obstet Gynecol"},{"issue":"362","key":"10.1016\/j.ejogrb.2018.11.007_bib0030","first-page":"e1","article-title":"Labor outcome at extremely advanced maternal age","volume":"214","author":"Osmundson","year":"2016","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0035","doi-asserted-by":"crossref","first-page":"886","DOI":"10.1001\/jama.1992.03490070068044","article-title":"Delayed childbearing and risk of adverse perinatal outcome. A population-based study","volume":"268","author":"Cnattingius","year":"1992","journal-title":"JAMA"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0040","doi-asserted-by":"crossref","first-page":"1084","DOI":"10.1097\/01.AOG.0000240139.46018.bd","article-title":"Pregnancy outcome after age 50","volume":"108","author":"Simchen","year":"2006","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0045","first-page":"935","article-title":"Effect of very advanced maternal age on pregnancy outcome and rate of cesarean delivery","volume":"92","author":"Dulitzki","year":"1998","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0050","doi-asserted-by":"crossref","first-page":"668","DOI":"10.1053\/ob.1996.v175.a74402","article-title":"Very advanced maternal age: pregnancy after age 45","volume":"175","author":"Dildy","year":"1996","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0055","doi-asserted-by":"crossref","first-page":"659","DOI":"10.1056\/NEJM199003083221004","article-title":"Delayed childbearing and the outcome of pregnancy","volume":"322","author":"Berkowitz","year":"1990","journal-title":"N Engl J Med"},{"issue":"558","key":"10.1016\/j.ejogrb.2018.11.007_bib0060","first-page":"e1","article-title":"Pregnancy outcome at extremely advanced maternal age","volume":"203","author":"Yogev","year":"2010","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0065","first-page":"1122","article-title":"Gynecologists ACoOa, Pregnancy TFoHi. Hypertension in pregnancy. Report of the American College of Obstetricians and Gynecologists\u2019 Task Force on Hypertension in Pregnancy","volume":"122","year":"2013","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0070","doi-asserted-by":"crossref","first-page":"768","DOI":"10.1016\/0002-9378(82)90349-0","article-title":"Criteria for screening tests for gestational diabetes","volume":"144","author":"Carpenter","year":"1982","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0075","first-page":"311","article-title":"Birth weight standards in the live-born population in Israel","volume":"7","author":"Dollberg","year":"2005","journal-title":"Isr Med Assoc J"},{"issue":"80","key":"10.1016\/j.ejogrb.2018.11.007_bib0080","article-title":"The role of maternal age in twin pregnancy outcomes","volume":"217","author":"McLennan","year":"2017","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0085","doi-asserted-by":"crossref","first-page":"457","DOI":"10.1097\/AOG.0000000000002504","article-title":"Risk of adverse pregnancy outcomes at advanced maternal age","volume":"131","author":"Frederiksen","year":"2018","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0090","doi-asserted-by":"crossref","first-page":"2320","DOI":"10.1001\/jama.288.18.2320","article-title":"Pregnancy in the sixth decade of life: obstetric outcomes in women of advanced reproductive age","volume":"288","author":"Paulson","year":"2002","journal-title":"Jama"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0095","doi-asserted-by":"crossref","first-page":"511","DOI":"10.1016\/0029-7844(96)00236-0","article-title":"Effect of maternal age and parity on the risk of uteroplacental bleeding disorders in pregnancy","volume":"88","author":"Ananth","year":"1996","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0100","doi-asserted-by":"crossref","first-page":"2500","DOI":"10.1093\/humrep\/dep238","article-title":"The aged uterus: multifetal pregnancy outcome after ovum donation in older women","volume":"24","author":"Simchen","year":"2009","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0105","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.fertnstert.2016.09.021","article-title":"Oocyte donation recipients of very advanced age: perinatal complications for singletons and twins","volume":"107","author":"Guesdon","year":"2017","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0110","doi-asserted-by":"crossref","first-page":"948","DOI":"10.1016\/j.fertnstert.2017.01.019","article-title":"Impact of oocyte donation on perinatal outcome in twin pregnancies","volume":"107","author":"Guilbaud","year":"2017","journal-title":"Fertil Steril"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0115","doi-asserted-by":"crossref","first-page":"2636","DOI":"10.1093\/humrep\/17.10.2636","article-title":"Factors influencing the obstetric and perinatal outcome after oocyte donation","volume":"17","author":"Sheffer-Mimouni","year":"2002","journal-title":"Hum Reprod"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0120","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1111\/1471-0528.14257","article-title":"Obstetric and neonatal complications in pregnancies conceived after oocyte donation: a systematic review and meta-analysis","volume":"124","author":"Storgaard","year":"2017","journal-title":"BJOG"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0125","doi-asserted-by":"crossref","first-page":"620","DOI":"10.1093\/humupd\/dmw012","article-title":"Maternal and fetal outcomes in oocyte donation pregnancies","volume":"22","author":"Savasi","year":"2016","journal-title":"Hum Reprod Update"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0130","doi-asserted-by":"crossref","first-page":"599","DOI":"10.1016\/j.rbmo.2009.04.002","article-title":"Assisted reproduction in women over 40 years of age: how old is too old?","volume":"19","author":"Hourvitz","year":"2009","journal-title":"Reprod Biomed Online"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0135","doi-asserted-by":"crossref","first-page":"827","DOI":"10.1097\/AOG.0000000000001983","article-title":"Outcomes of twin pregnancies in women 45 years of age or older","volume":"129","author":"Gerber","year":"2017","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0140","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1055\/s-0043-100105","article-title":"Pregnancies in women aged 45 years and older - a 10-Year retrospective analysis in Berlin","volume":"77","author":"Rendtorff","year":"2017","journal-title":"Geburtshilfe und Frauenheilkunde"},{"key":"10.1016\/j.ejogrb.2018.11.007_bib0145","doi-asserted-by":"crossref","first-page":"1008","DOI":"10.1038\/jp.2016.118","article-title":"Population-based risks of mortality and preterm morbidity by gestational age and birth weight","volume":"36","author":"Baer","year":"2016","journal-title":"J Perinatol"}],"container-title":["European Journal of Obstetrics &amp; Gynecology and Reproductive Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211518310819?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211518310819?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T05:42:19Z","timestamp":1759556539000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0301211518310819"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,12]]},"references-count":29,"alternative-id":["S0301211518310819"],"URL":"https:\/\/doi.org\/10.1016\/j.ejogrb.2018.11.007","relation":{},"ISSN":["0301-2115"],"issn-type":[{"value":"0301-2115","type":"print"}],"subject":[],"published":{"date-parts":[[2018,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Outcomes of singleton versus twin pregnancies in the fifth and sixth decades","name":"articletitle","label":"Article Title"},{"value":"European Journal of Obstetrics & Gynecology and Reproductive Biology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ejogrb.2018.11.007","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2018 Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}]}}