{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T10:18:12Z","timestamp":1783073892119,"version":"3.54.6"},"reference-count":17,"publisher":"Elsevier BV","issue":"4","license":[{"start":{"date-parts":[[1999,10,1]],"date-time":"1999-10-01T00:00:00Z","timestamp":938736000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Preventive Medicine"],"published-print":{"date-parts":[[1999,10]]},"DOI":"10.1006\/pmed.1999.0536","type":"journal-article","created":{"date-parts":[[2002,10,6]],"date-time":"2002-10-06T19:50:21Z","timestamp":1033933821000},"page":"263-266","source":"Crossref","is-referenced-by-count":27,"title":["Do Primiparas Aged 40 Years or Older Carry an Increased Obstetric Risk?"],"prefix":"10.1006","volume":"29","author":[{"given":"Heinz S.","family":"Scholz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Josef","family":"Haas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edgar","family":"Petru","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1006\/pmed.1999.0536_RF1","first-page":"218","article-title":"Influence of age on risk-factors during pregnancy, delivery and puerperium of primiparae","volume":"35","author":"Altmann","year":"1975","journal-title":"Geburtsh Frauenheilk"},{"key":"10.1006\/pmed.1999.0536_RF2","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"},{"key":"10.1006\/pmed.1999.0536_RF3","first-page":"109","article-title":"The elderly primipara","volume":"79","author":"Blanc","year":"1984","journal-title":"Rev Fr Gynecol Obstet"},{"key":"10.1006\/pmed.1999.0536_RF4","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/0020-7292(87)90003-8","article-title":"Re-evaluation of the obstetrical risk for the older primipara","volume":"25","author":"Blickstein-I","year":"1987","journal-title":"Int J Gynecol Obstet"},{"key":"10.1006\/pmed.1999.0536_RF5","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1515\/jpme.1979.7.2.108","article-title":"Is the elderly primipara really at high risk?","volume":"7","author":"Blum","year":"1979","journal-title":"J Perinat Med"},{"key":"10.1006\/pmed.1999.0536_RF6","first-page":"418","article-title":"Delivery at 40 years of age and over","volume":"15","author":"Caspi","year":"1979","journal-title":"Isr J Med Sci"},{"key":"10.1006\/pmed.1999.0536_RF7","first-page":"93","article-title":"Adverse perinatal outcome in the older primipara","volume":"16","author":"Dollberg","year":"1996","journal-title":"J Perinatol"},{"key":"10.1006\/pmed.1999.0536_RF8","first-page":"68","article-title":"Pregnancy in women over forty","volume":"208","author":"Ekblad","year":"1994","journal-title":"Ann Chir Gynecol"},{"key":"10.1006\/pmed.1999.0536_RF9","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1055\/s-2007-1022906","article-title":"Pregnancy, labor and fetal outcome in females over 40 years of age","volume":"53","author":"Heimann","year":"1993","journal-title":"Geburtsh Frauenheilk"},{"key":"10.1006\/pmed.1999.0536_RF10","first-page":"165","article-title":"The problem of the older primipara","volume":"56","author":"Kessler","year":"1980","journal-title":"Obstet Gynecol"},{"key":"10.1006\/pmed.1999.0536_RF11","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1016\/0002-9378(75)90076-9","article-title":"The elderly primigravida","volume":"121","author":"Morrison","year":"1975","journal-title":"Am J Obstet Gynecol"},{"key":"10.1006\/pmed.1999.0536_RF12","first-page":"86","article-title":"Influence of maternal age on the course of labor: analysis of women over 40 years","volume":"201","author":"Ragosch","year":"1997","journal-title":"Zeitschr Geburtsh Neonatol"},{"key":"10.1006\/pmed.1999.0536_RF13","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1111\/j.1447-0756.1991.tb00281.x","article-title":"Obstetric performance in the elderly Malaysian primigravida","volume":"17","author":"Urquhart","year":"1991","journal-title":"Asia Ocean J Obstet Gynecol"},{"key":"10.1006\/pmed.1999.0536_RF14","doi-asserted-by":"crossref","first-page":"379","DOI":"10.1055\/s-2008-1036140","article-title":"The elderly primipara: a risk assessment","volume":"47","author":"Schaller","year":"1987","journal-title":"Geburtsh Frauenheilk"},{"key":"10.1006\/pmed.1999.0536_RF15","first-page":"69","article-title":"The older primipara\u2014an obstetrical risk group?","volume":"116","author":"Seufert","year":"1994","journal-title":"Zentralbl Gyn\u00e4kol"},{"key":"10.1006\/pmed.1999.0536_RF16","first-page":"460","article-title":"The elderly primigravida\u2014evaluation of 90 cases","volume":"30","author":"Sivalingam","year":"1989","journal-title":"Singapore Med J"},{"key":"10.1006\/pmed.1999.0536_RF17","doi-asserted-by":"crossref","first-page":"1236","DOI":"10.1016\/S0002-9378(97)70340-5","article-title":"Does advanced maternal age affect pregnancy outcome in women with mild hypertension remote from term","volume":"176","author":"Barton","year":"1997","journal-title":"Am J Obstet Gynecol"}],"container-title":["Preventive Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0091743599905364?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0091743599905364?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,5,7]],"date-time":"2019-05-07T17:23:26Z","timestamp":1557249806000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0091743599905364"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1999,10]]},"references-count":17,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1999,10]]}},"alternative-id":["S0091743599905364"],"URL":"https:\/\/doi.org\/10.1006\/pmed.1999.0536","relation":{},"ISSN":["0091-7435"],"issn-type":[{"value":"0091-7435","type":"print"}],"subject":[],"published":{"date-parts":[[1999,10]]}}}