{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T13:52:13Z","timestamp":1756993933331},"reference-count":6,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2014,8,1]],"date-time":"2014-08-01T00:00:00Z","timestamp":1406851200000},"content-version":"unspecified","delay-in-days":12723,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta genet. med. gemellol.: twin res."],"published-print":{"date-parts":[[1979,10]]},"abstract":"<jats:p>The results of a multihospital study involving a total of 588 twin pairs born in Chicago in 1970\u20131975 are reported, with special respect to differences in mortality between first and second twins by time as well as by cause of death. Mortality was higher in second than in first twins and most commonly occurred after delivery and was the result of immaturity and of respiratory distress syndrome.<\/jats:p>","DOI":"10.1017\/s0001566000008904","type":"journal-article","created":{"date-parts":[[2016,7,27]],"date-time":"2016-07-27T09:55:50Z","timestamp":1469613350000},"page":"347-352","source":"Crossref","is-referenced-by-count":18,"title":["The Northwestern University Multihospital Twin Study. <i>II. Mortality of First Versus Second Twins<\/i>"],"prefix":"10.1017","volume":"28","author":[{"given":"R.F.","family":"Ellis","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gary S.","family":"Berger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Louis","family":"Keith","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Depp","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2014,8,1]]},"reference":[{"key":"S0001566000008904_ref006","first-page":"795","article-title":"Twin pregnancy: Complications and treatment","volume":"42","author":"Powers","year":"1973","journal-title":"Obstet Gynecol"},{"key":"S0001566000008904_ref003","first-page":"188","volume-title":"Human Multiple Reproduction","author":"Farr","year":"1975"},{"key":"S0001566000008904_ref001","volume-title":"Multiple gestations: Morbidity and mortality in a perinatal center and its referring institutions","author":"Ellis","year":"1977"},{"key":"S0001566000008904_ref005","article-title":"Northwestern University Multihospital Twin Study. I. A description of 588 twin pregnancies and associated pregnancy loss, 1971\u20131975","author":"Keith","year":"1979","journal-title":"Am J Obstet Gynecol"},{"key":"S0001566000008904_ref004","volume-title":"Gynecology and Obstetrics","author":"Keith","year":"1979"},{"key":"S0001566000008904_ref002","volume-title":"Health Care Research in Illinois","volume":"II","author":"Ellis","year":"1977"}],"container-title":["Acta geneticae medicae et gemellologiae: twin research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0001566000008904","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,26]],"date-time":"2019-05-26T20:46:39Z","timestamp":1558903599000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0001566000008904\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1979,10]]},"references-count":6,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1979,10]]}},"alternative-id":["S0001566000008904"],"URL":"https:\/\/doi.org\/10.1017\/s0001566000008904","relation":{},"ISSN":["0001-5660","2059-6324"],"issn-type":[{"value":"0001-5660","type":"print"},{"value":"2059-6324","type":"electronic"}],"subject":[],"published":{"date-parts":[[1979,10]]}}}