American College of Physicians, Annals of Internal Medicine, 2(168), p. 100
DOI: 10.7326/m17-1319
American College of Physicians, Annals of Internal Medicine, 2(169), p. 131
DOI: 10.7326/l18-0206
American College of Physicians, Annals of Internal Medicine, 2(169), p. 132
DOI: 10.7326/l18-0207
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