{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T21:02:35Z","timestamp":1771016555234,"version":"3.50.1"},"reference-count":2,"publisher":"Elsevier BV","issue":"5","license":[{"start":{"date-parts":[[2019,5,1]],"date-time":"2019-05-01T00:00:00Z","timestamp":1556668800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2019,5,1]],"date-time":"2019-05-01T00:00:00Z","timestamp":1556668800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T00:00:00Z","timestamp":1653609600000},"content-version":"vor","delay-in-days":1122,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","fertstert.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Fertility and Sterility"],"published-print":{"date-parts":[[2019,5]]},"DOI":"10.1016\/j.fertnstert.2019.03.008","type":"journal-article","created":{"date-parts":[[2019,4,4]],"date-time":"2019-04-04T22:35:51Z","timestamp":1554417351000},"page":"833-834","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":5,"title":["Introduction"],"prefix":"10.1016","volume":"111","author":[{"given":"Mark","family":"Sigman","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.fertnstert.2019.03.008_bib1","series-title":"Fertility in men","first-page":"1","article-title":"General considerations","author":"Hotchkiss","year":"1944"},{"key":"10.1016\/j.fertnstert.2019.03.008_bib2","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1016\/j.fertnstert.2018.06.005","article-title":"Forty years of IVF","volume":"110","author":"Niederberger","year":"2018","journal-title":"Fertil Steril"}],"container-title":["Fertility and Sterility"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0015028219302511?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0015028219302511?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,16]],"date-time":"2025-09-16T08:21:11Z","timestamp":1758010871000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0015028219302511"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,5]]},"references-count":2,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2019,5]]}},"alternative-id":["S0015028219302511"],"URL":"https:\/\/doi.org\/10.1016\/j.fertnstert.2019.03.008","relation":{},"ISSN":["0015-0282"],"issn-type":[{"value":"0015-0282","type":"print"}],"subject":[],"published":{"date-parts":[[2019,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Introduction","name":"articletitle","label":"Article Title"},{"value":"Fertility and Sterility","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.fertnstert.2019.03.008","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a92019 Published by Elsevier Inc. on behalf of the American Society for Reproductive Medicine","name":"copyright","label":"Copyright"}]}}