American College of Physicians, Annals of Internal Medicine, 8(148), p. 624, 2008
DOI: 10.7326/0003-4819-148-8-200804150-00010
American College of Physicians, Annals of Internal Medicine, 8(148), p. 624
DOI: 10.7326/0003-4819-148-8-200804150-00009
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