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Mulgrew AT, Fox N, Ayas NT, Ryan CF.Mulgrew AT, et al. Among authors: ryan cf.Ann Intern Med. 2007 Feb 6;146(3):157-66. doi: 10.7326/0003-4819-146-3-200702060-00004.Ann Intern Med. 2007.PMID: 17283346Clinical Trial.
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