1. From the Department of Medicine, Massachusetts General Hospital (S.E.W.); the Department of Medicine, Harvard Medical School (S.E.W., M.L.B.), the Department of Health Policy and Management, Harvard T.H. Chan School of Public Health (M.L.B.); and the Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women’s Hospital (M.L.B.) — all in Boston.