1. Office of Research and Development; Pittsburgh, Pennsylvania, USA.
2. Center for Health Equity Research and Promotion; Pittsburgh, Pennsylvania, USA.
3. Department of Endocrinology; VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA.
4. Division of Endocrinology & Metabolism, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
5. Center for Health Equity Research and Promotion, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA.
6. Department of Family Medicine & Community Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.