| Affiliation: | 1. Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania;2. Philadelphia VA Medical Center, Philadelphia, Pennsylvania;3. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania;4. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan;5. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan;6. Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania |
