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Results were restricted to systematic reviews, randomized control trials\/controlled clinical trials, and observational studies. Searches were updated on a regular basis and incorporated in the guideline to May 2010. Grey (unpublished) literature was identified through searching the websites of health technology assessment and health technology assessment\u2010related agencies, clinical practice guideline collections, clinical trial registries, and national and international medical specialty societies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Values<\/jats:title><jats:p>The quality of evidence was rated using the criteria described by the Canadian Task Force on Preventive Health Care (Table).<\/jats:p><\/jats:sec>","DOI":"10.1016\/j.ijgo.2010.12.003","type":"journal-article","created":{"date-parts":[[2011,1,18]],"date-time":"2011-01-18T09:13:07Z","timestamp":1295341987000},"page":"252-256","source":"Crossref","is-referenced-by-count":20,"title":["Oral contraceptives and the risk of venous thromboembolism: An update"],"prefix":"10.1002","volume":"112","author":[{"given":"Robert","family":"Reid","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicholas","family":"Leyland","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wendy","family":"Wolfman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catherine","family":"Allaire","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alaa","family":"Awadalla","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carolyn","family":"Best","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sheila","family":"Dunn","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Madeleine","family":"Lemyre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Violaine","family":"Marcoux","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chantal","family":"Menard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frank","family":"Potestio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Rittenberg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sukhbir","family":"Singh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vyta","family":"Senikas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,1,17]]},"container-title":["International Journal of Gynecology &amp; Obstetrics"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/api.elsevier.com\/content\/article\/PII:S0020729210005564?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/api.elsevier.com\/content\/article\/PII:S0020729210005564?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1016%2Fj.ijgo.2010.12.003","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1016%2Fj.ijgo.2010.12.003","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1016\/j.ijgo.2010.12.003","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,3]],"date-time":"2023-10-03T18:36:22Z","timestamp":1696358182000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1016\/j.ijgo.2010.12.003"}},"subtitle":["No. 252, December 2010"],"short-title":[],"issued":{"date-parts":[[2011,1,17]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2011,3]]}},"alternative-id":["10.1016\/j.ijgo.2010.12.003"],"URL":"https:\/\/doi.org\/10.1016\/j.ijgo.2010.12.003","archive":["Portico"],"relation":{},"ISSN":["0020-7292","1879-3479"],"issn-type":[{"value":"0020-7292","type":"print"},{"value":"1879-3479","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,1,17]]}}}