American College of Physicians, Annals of Internal Medicine, 6(159), p. 435
DOI: 10.7326/0003-4819-159-6-201309170-00016
American College of Physicians, Annals of Internal Medicine, 6(159), p. 435
DOI: 10.7326/0003-4819-159-6-201309170-00017
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