1. Section on Cardiology, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
2. Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
3. School of Medicine, Department of Medicine, University of Alabama at Birmingham
4. School of Public Health, Department of Biostatistics, University of Alabama at Birmingham
5. School of Public Health, Department of Epidemiology, University of Alabama at Birmingham
6. Section on Cardiology, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina6Epidemiological Cardiology Research Center, Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston-Salem, Nor