1. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
2. Division of Cardiology, Department of Medicine, Emory Clinical Cardiovascular Research Institute, Emory University School of Medicine, Atlanta, Georgia
3. Atlanta VA Medical Center, Decatur, Georgia
4. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
5. Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia
6. Mazankowski Alberta Heart Institute, University of Alberta, Alberta, Canada