1. South Carolina SmartState Center for Healthcare Quality
2. Department of Epidemiology and Biostatistics
3. Department of Health Promotion, Education and Behavior, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
4. Division of Nephrology, Department of Medicine Loma Linda VA Healthcare System
5. Loma Linda University School of Medicine, Loma Linda, California
6. Department of Internal Medicine, School of Medicine, University of South Carolina
7. Department of Health Services Policy and Management, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA.