1. Center for Health Equity Research and Promotion, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
2. School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
3. Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
4. University of Arizona Arthritis Center, University of Arizona, Tucson
5. College of Medicine, University of Arizona, Tucson
6. Center for Health Equity Research and Promotion, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
7. School of Medicine, University of Pennsylvania, Philadelphia
8. Geriatric Research, Education, and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
9. Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, New York