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Richardson WS, Wilson MC, Williams JW Jr, Moyer VA, Naylor CD.Richardson WS, et al.JAMA. 2000 Aug 16;284(7):869-75. doi: 10.1001/jama.284.7.869.JAMA. 2000.PMID: 10938177
Lee A, Joynt GM, Ho AM, Keitz S, McGinn T, Wyer PC; EBM Teaching Scripts Working Group.Lee A, et al.J Gen Intern Med. 2009 May;24(5):642-8. doi: 10.1007/s11606-009-0918-8. Epub 2009 Feb 27.J Gen Intern Med. 2009.PMID: 19247720Free PMC article.