American College of Physicians, Annals of Internal Medicine, 10(131), p. 791, 1999
DOI: 10.7326/0003-4819-131-10-199911160-00020
American College of Physicians, Annals of Internal Medicine, 10(131), p. 791, 1999
DOI: 10.7326/0003-4819-131-10-199911160-00019
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