1. Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
2. Division of General Internal Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
3. Department of Biostatistics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
4. Centers for Value-Based Pharmacy Initiatives and High-Value Health Care, UPMC Health Plan, Pittsburgh, Pennsylvania
5. Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania