1. Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA (S.C.M., F.M.M., C.S., N.W.D., B.R.R.).
2. The Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (D.B.K.).
3. Department of Medicine, University of Colorado School of Medicine, Aurora, CO (DDM).
4. VA Eastern Colorado Geriatric Research Education and Clinical Center, Denver, CO (DDM).
5. Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA (MH).
6. Department of Health Policy and Management Rollins School of Public Health, Emory University, Atlanta, GA (MH).
7. Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA (NWD).