{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T13:55:56Z","timestamp":1772805356512,"version":"3.50.1"},"reference-count":0,"publisher":"BMJ","issue":"5129","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ"],"published-print":{"date-parts":[[1959,4,25]]},"DOI":"10.1136\/bmj.1.5129.1090","type":"journal-article","created":{"date-parts":[[2009,4,2]],"date-time":"2009-04-02T02:38:39Z","timestamp":1238639919000},"page":"1090-1092","source":"Crossref","is-referenced-by-count":46,"title":["Smoking Habits of Monozygotic and Dizygotic Twins"],"prefix":"10.1136","volume":"1","author":[{"given":"L.","family":"Friberg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Kaij","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S. J.","family":"Dencker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E.","family":"Jonsson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","container-title":["BMJ"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmj.1.5129.1090","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,25]],"date-time":"2020-09-25T19:40:04Z","timestamp":1601062804000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.bmj.com\/lookup\/doi\/10.1136\/bmj.1.5129.1090"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1959,4,25]]},"references-count":0,"journal-issue":{"issue":"5129","published-print":{"date-parts":[[1959,4,25]]}},"URL":"https:\/\/doi.org\/10.1136\/bmj.1.5129.1090","relation":{},"ISSN":["0959-8138","1468-5833"],"issn-type":[{"value":"0959-8138","type":"print"},{"value":"1468-5833","type":"electronic"}],"subject":[],"published":{"date-parts":[[1959,4,25]]}}}