{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T02:07:00Z","timestamp":1783130820680,"version":"3.54.6"},"reference-count":0,"publisher":"American Medical Association (AMA)","issue":"20","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arch Intern Med"],"published-print":{"date-parts":[[2008,11,10]]},"DOI":"10.1001\/archinte.168.20.2238","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T16:13:07Z","timestamp":1226333587000},"page":"2238","source":"Crossref","is-referenced-by-count":32,"title":["Vitamin B12 and Folate and the Risk of Anemia in Old Age"],"prefix":"10.1001","volume":"168","author":[{"given":"Wendy P. J.","family":"den Elzen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rudi G. J.","family":"Westendorp","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marijke","family":"Fr\u00f6lich","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wouter","family":"de Ruijter","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Willem J. J.","family":"Assendelft","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacobijn","family":"Gussekloo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"10","container-title":["Archives of Internal Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/jamanetwork.com\/journals\/jamainternalmedicine\/fullarticle\/773440","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2016,12,16]],"date-time":"2016-12-16T23:13:02Z","timestamp":1481929982000},"score":1,"resource":{"primary":{"URL":"http:\/\/archinte.jamanetwork.com\/article.aspx?doi=10.1001\/archinte.168.20.2238"}},"subtitle":["The Leiden 85-Plus Study"],"short-title":[],"issued":{"date-parts":[[2008,11,10]]},"references-count":0,"journal-issue":{"issue":"20","published-print":{"date-parts":[[2008,11,10]]}},"URL":"https:\/\/doi.org\/10.1001\/archinte.168.20.2238","relation":{"has-review":[{"id-type":"doi","id":"10.3410\/f.1146990.604100","asserted-by":"object"}]},"ISSN":["0003-9926"],"issn-type":[{"value":"0003-9926","type":"print"}],"subject":[],"published":{"date-parts":[[2008,11,10]]}}}