1. Department of Health Management and Policy, Dornsife School of Public Health, Drexel University, Philadelphia, Pennsylvania
2. Department of Health Policy and Administration, College of Health and Human Development, Pennsylvania State University, University Park
3. Center for Health Equity Research and Promotion, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania
4. Division of General Internal Medicine, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
5. Kaiser Permanente Washington Health Research Institute, Seattle