1. Inova Center of Outcomes Research, Inova Heart and Vascular Institute, Fairfax, VA (A.A.D.).
2. Division of Cardiology, Johns Hopkins University, Baltimore, MD (A.A.D., J.R.R., G.G.).
3. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health (A.L.G.), University of Pittsburgh, PA.
4. Geriatric Cardiology Section (D.E.F.), University of Pittsburgh, PA.
5. Geriatric Research, Education, and Clinical Center, VA Pittsburgh Healthcare System, PA (D.E.F.).
6. Sinai Hospital of Baltimore, LifeBridge Health Cardiovascular Institute, MD (M.M.).
7. Cardiovascular Center, Department of Medicine, University of Michigan Health System, Ann Arbor (M.M.).