{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T09:12:12Z","timestamp":1790845932500,"version":"4.1.0"},"reference-count":13,"publisher":"Walter de Gruyter GmbH","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2003,1,14]]},"DOI":"10.1515\/jpm.2003.028","type":"journal-article","created":{"date-parts":[[2004,9,20]],"date-time":"2004-09-20T11:14:48Z","timestamp":1095678888000},"source":"Crossref","is-referenced-by-count":50,"title":["Effect of maternal age on blood loss during parturition: a retrospective multivariate analysis of 10,053 cases"],"prefix":"10.1515","volume":"31","author":[{"given":"A.","family":"Ohkuchi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Onagawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"Usui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Koike","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Hiratsuka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Izumi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Ohkusa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Matsubara","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I.","family":"Sato","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Suzuki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Minakami","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","reference":[{"key":"p_1","first-page":"69","volume":"77","author":"Combs CA","year":"1991","journal-title":"Obstet Gynecol"},{"key":"p_2","first-page":"77","volume":"77","author":"Combs CA","year":"1991","journal-title":"Obstet Gynecol"},{"key":"p_3","doi-asserted-by":"crossref","first-page":"1881","DOI":"10.1016\/0002-9378(93)90706-O","volume":"168","author":"Edge V","year":"1993","journal-title":"Am J Obstet Gynecol"},{"key":"p_4","first-page":"132","volume":"50","author":"Feerasta SH","year":"2000","journal-title":"J Pak Med Assoc"},{"key":"p_5","doi-asserted-by":"publisher","DOI":"10.1097\/00006254-198611000-00024"},{"key":"p_6","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2000.106249"},{"key":"p_7","doi-asserted-by":"publisher","DOI":"10.1016\/S0029-7844(97)00534-6"},{"key":"p_9","doi-asserted-by":"publisher","DOI":"10.1001\/jama.283.20.2661"},{"key":"p_10","first-page":"983","volume":"36","year":"1984","journal-title":"Nippon Sanka Fujinka Gakkai Zasshi"},{"key":"p_12","doi-asserted-by":"publisher","DOI":"10.1016\/0029-7844(94)00330-G"},{"key":"p_13","doi-asserted-by":"crossref","first-page":"1064","DOI":"10.1111\/j.1471-0528.1998.tb09937.x","volume":"105","author":"Rosenthal AN","year":"1998","journal-title":"Br J Obstet Gynaecol"},{"key":"p_14","doi-asserted-by":"publisher","DOI":"10.1007\/BF02505330"},{"key":"p_15","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1111\/j.1471-0528.1993.tb12974.x","volume":"100","author":"Tsu VD","year":"1993","journal-title":"Br J Obstet Gynaecol"}],"container-title":["Journal of Perinatal Medicine"],"original-title":[],"link":[{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/JPM.2003.028\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T01:41:20Z","timestamp":1619055680000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/JPM.2003.028\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2003,1,14]]},"references-count":13,"journal-issue":{"issue":"3"},"URL":"https:\/\/doi.org\/10.1515\/jpm.2003.028","relation":{},"ISSN":["0300-5577"],"issn-type":[{"value":"0300-5577","type":"print"}],"subject":[],"published":{"date-parts":[[2003,1,14]]}}}