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Nelson HD, Fu R, Cantor A, Pappas M, Daeges M, Humphrey L.Nelson HD, et al.Ann Intern Med. 2016 Feb 16;164(4):244-55. doi: 10.7326/M15-0969. Epub 2016 Jan 12.Ann Intern Med. 2016.PMID: 26756588Free article.Review.