1. Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, Georgia.
2. Department of Biostatistics, Rollins School of Public Health, Emory University, Atlanta, Georgia.
3. Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, Georgia.
4. Social Epidemiology Research Center, Morehouse School of Medicine, Atlanta, Georgia.
5. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia.