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Sinsky CA, Foreman-Hoffman V, Cram P.Sinsky CA, et al.J Gen Intern Med. 2008 Feb;23(2):164-8. doi: 10.1007/s11606-007-0490-z. Epub 2007 Dec 28.J Gen Intern Med. 2008.PMID: 18163191Free PMC article.