1. Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA (E.J.D., T.K., P.W.G., J.G.).
2. Center for Cardiovascular Outcomes, Quality, and Evaluative Research, University of Pennsylvania (E.J.D., A.S.N., S.A.M.K., T.K., P.W.G., J.G.).
3. Leonard Davis Institute of Health Economics at the University of Pennsylvania (E.J.D., A.S.N., S.A.M.K., P.W.G., J.G.).
4. Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania (A.S.N., S.A.M.K., M.S., T.K., D.M.K., J.G.)
5. Department of Medicine, Hospital of the University of Pennsylvania (S.T.)