{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T11:59:04Z","timestamp":1791806344883,"version":"4.3.4"},"reference-count":0,"publisher":"BMJ","issue":"may19 4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ"],"published-print":{"date-parts":[[2010,5,13]]},"DOI":"10.1136\/bmj.c2181","type":"journal-article","created":{"date-parts":[[2010,5,20]],"date-time":"2010-05-20T19:48:30Z","timestamp":1274384910000},"page":"c2181-c2181","source":"Crossref","is-referenced-by-count":467,"title":["Long term treatment with metformin in patients with type 2 diabetes and risk of vitamin B-12 deficiency: randomised placebo controlled trial"],"prefix":"10.1136","volume":"340","author":[{"given":"J.","family":"de Jager","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Kooy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Lehert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. G.","family":"Wulffele","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"van der Kolk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.","family":"Bets","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Verburg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. J. M.","family":"Donker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. D. A.","family":"Stehouwer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2010,5,20]]},"container-title":["BMJ"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmj.c2181","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,25]],"date-time":"2020-09-25T16:52:20Z","timestamp":1601052740000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.bmj.com\/lookup\/doi\/10.1136\/bmj.c2181"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,5,13]]},"references-count":0,"journal-issue":{"issue":"may19 4","published-online":{"date-parts":[[2010,5,20]]},"published-print":{"date-parts":[[2010,5,19]]}},"URL":"https:\/\/doi.org\/10.1136\/bmj.c2181","relation":{"has-review":[{"id-type":"doi","id":"10.3410\/f.13132971.14469055","asserted-by":"object"}]},"ISSN":["0959-8138","1468-5833"],"issn-type":[{"value":"0959-8138","type":"print"},{"value":"1468-5833","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,5,13]]}}}