1. Division of Cardiology (Frankel Cardiovascular Center), Department of Internal Medicine, University of Michigan Medical School, Ann Arbor (V.A., B.K.N.).
2. Cardiovascular Division, Penn Cardiovascular Outcomes, Quality, and Evaluative Research Center, Hospital of the University of Pennsylvania, Philadelphia (J.G.).
3. Department of Internal Medicine, Michigan Integrated Center for Health Analytics and Medical Prediction, University of Michigan Medical School, Ann Arbor (B.K.N.).
4. Center for Clinical Management and Research, Ann Arbor VA Medical Center, MI (B.K.N.).