1. Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
2. Rollins School of Public Health, Department of Epidemiology, Emory University, Atlanta, Georgia
3. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, Georgia
4. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
5. Atlanta VA Medical Center, Decatur, Georgia