1. From the Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.E.C.); Section of Cardiology, Department of Medicine, Beth Israel-Deaconess Medical Center, Boston, Mass (J.C.); and the Sections of Cardiovascular Medicine, Department of Medicine; Health Policy and Administration, Department of Epidemiology and Public Health; and Robert Wood Johnson Clinical Scholars Program, Department of Medicine, Yale University School of Medicine, and Center for...