1. From the Departments of Medicine (D.S.K., L.M.M., D.S.P., P.J.Z.) and Radiology (D.L.), Beth Israel Deaconess Medical Center, the Departments of Medicine (D.S.K., L.M.M., D.S.P., P.J.Z., D.M.D.) and Radiology (D.L.), Harvard Medical School, and the Department of Medicine, Massachusetts General Hospital (D.M.D.) — all in Boston; and the Department of Medicine, New York Presbyterian–Columbia University Medical Center, and the Department of Medicine, Columbia University Vagelos College of Physicians and...