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Lyman JA, Schorling J, Nadkarni M, May N, Scully K, Voss J.Lyman JA, et al.J Gen Intern Med. 2008 Apr;23(4):485-8. doi: 10.1007/s11606-007-0467-y.J Gen Intern Med. 2008.PMID: 18373150Free PMC article.