1. Cardiovascular Division (T.M.M., A.E.E., S.N., R.D., F.E.M., D.S.F.), Perelman School of Medicine
2. Division of General Internal Medicine (Z.G., P.W.G.), Perelman School of Medicine
3. Center for Cardiovascular Outcomes, Quality, and Evaluative Research (Z.G., P.W.G.), University of Pennsylvania, Philadelphia
4. Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA (A.E.E., P.W.G.).