1. Perelman School of Medicine, University of Pennsylvania, Division of General Internal Medicine, Philadelphia, Pennsylvania.
2. Perelman School of Medicine, University of Pennsylvania, Penn Center for Community Health Workers, Philadelphia, Pennsylvania.
3. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
4. Perelman School of Medicine and School of Nursing, University of Pennsylvania, Department of Biostatistics and Epidemiology, Philadelphia, Pennsylvania.
5. Corporal Michael J. Crescenz VA Center for Health Equity Research and Promotion, Philadelphia, Pennsylvania.