{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T03:03:07Z","timestamp":1777863787378,"version":"3.51.4"},"reference-count":4,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1973,2,1]],"date-time":"1973-02-01T00:00:00Z","timestamp":97372800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proceedings of the Royal Society of Medicine"],"published-print":{"date-parts":[[1973,2]]},"DOI":"10.1177\/003591577306600240","type":"journal-article","created":{"date-parts":[[2019,7,19]],"date-time":"2019-07-19T01:10:16Z","timestamp":1563498616000},"page":"188-188","source":"Crossref","is-referenced-by-count":0,"title":["Placental Lactogen Levels in Threatened Abortion [\n                    <i>Abstract<\/i>\n                    ]"],"prefix":"10.1177","volume":"66","author":[{"given":"P A R","family":"Niven","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T","family":"Chard","sequence":"additional","affiliation":[{"name":"St Bartholomew's Hospital, London EC1"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,9]]},"reference":[{"key":"bibr-bibr1-003591577306600240","doi-asserted-by":"crossref","first-page":"535","DOI":"10.1111\/j.1471-0528.1971.tb00312.x","volume":"78","author":"Letchworth A T","year":"1971","journal-title":"Journal of Obstetrics and Gynecology of the British Commonwealth"},{"key":"bibr-bibr2-003591577306600240","unstructured":"Lowenstein J, Boyd G W, Rippon A E, James V H T, Peart W S, (1972) In: Hypertension '72. Ed. Genest J, Koiw E. Springer, Berlin &c.; p 481"},{"key":"bibr-bibr3-003591577306600240","doi-asserted-by":"crossref","first-page":"602","DOI":"10.1136\/adc.47.254.602","volume":"47","author":"Atherden S M","year":"1972","journal-title":"Archives of Disease in Childhood"},{"key":"bibr-bibr4-003591577306600240","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1136\/adc.47.251.62","volume":"47","author":"Barnes N D","year":"1972","journal-title":"Archives of Disease in Childhood"}],"container-title":["Proceedings of the Royal Society of Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003591577306600240","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003591577306600240","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T05:31:24Z","timestamp":1777527084000},"score":1,"resource":{"primary":{"URL":"http:\/\/journals.sagepub.com\/doi\/10.1177\/003591577306600240"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1973,2]]},"references-count":4,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2016,9]]},"published-print":{"date-parts":[[1973,2]]}},"alternative-id":["10.1177\/003591577306600240"],"URL":"https:\/\/doi.org\/10.1177\/003591577306600240","relation":{},"ISSN":["0035-9157"],"issn-type":[{"value":"0035-9157","type":"print"}],"subject":[],"published":{"date-parts":[[1973,2]]}}}