1. Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee.
2. Vanderbilt Eskind Diabetes Center, Diabetes Research & Training Center, Vanderbilt University School of Medicine, Nashville, Tennessee.
3. Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.
4. Center for Disease Prevention and Health Interventions for Diverse Populations, Ralph H. Johnson V.A. Medical Center, Charleston, South Carolina.
5. Center for Health Disparities Research, Medical University of South Carolina, Charleston, South Carolina.