1. Department of Medicine, University of Mississippi Medical Center, Jackson
2. Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham
3. Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina
4. Department of Medicine, Columbia University Medical Center, New York, New York
5. Department of Population Health, New York University School of Medicine, New York
6. Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham