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Miller J, Chan BK, Nelson HD.Miller J, et al. Among authors: nelson hd.Ann Intern Med. 2002 May 7;136(9):680-90. doi: 10.7326/0003-4819-136-9-200205070-00011.Ann Intern Med. 2002.PMID: 11992304Free article.Review.
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Nygren P, Nelson HD, Klein J.Nygren P, et al. Among authors: nelson hd.Ann Fam Med. 2004 Mar-Apr;2(2):161-9. doi: 10.1370/afm.113.Ann Fam Med. 2004.PMID: 15083858Free PMC article.Review.