1. From the Ocala Heart Institute, Munroe Regional Medical Center, Ocala, FL (J.A.B.); Department of Health Care Policy, Harvard Medical School, Boston, MA (Y.H., S.-L.T.N.); Department of Medicine, Section of Cardiology, Boston Medical Center, Boston, MA (A.K.J.); Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL (C.W.Y.); and Department of Biostatistics, Harvard School of Public Health, Boston, MA (S.-L.T.N.).