1. Division of Geriatric Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. Geriatrics and Extended Care Program, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
3. Division of Geriatrics, University of California, San Francisco
4. Geriatrics, Palliative, and Extended Care Service Line, San Francisco Veterans Affairs Medical Center, San Francisco, California
5. Statistical Editor, JAMA Internal Medicine