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Johnson RL, Saha S, Arbelaez JJ, Beach MC, Cooper LA.Johnson RL, et al. Among authors: beach mc.J Gen Intern Med. 2004 Feb;19(2):101-10. doi: 10.1111/j.1525-1497.2004.30262.x.J Gen Intern Med. 2004.PMID: 15009789Free PMC article.