1. From the Cardiovascular Institute of the University of Pittsburgh Medical Center (D.M.M., R.H., K.J., T.T., A.M.F.), Pittsburgh, Pa; Department of Epidemiology (R.H.), Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pa; Cleveland Clinic Foundation (R.C.S.), Cleveland, Ohio; Massachusetts General Hospital (G.W.D.), Boston, Mass; Hospital of the University of Pennsylvania (E.L.), Philadelphia, Pa; Baylor Methodist Hospital (G.T.-A.), Houston, Tex; Mount Sinai Medical Center (A...