1. School of Public Health, Department of Epidemiology and Biostatistics, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV, USA
2. Research Instructor, School of Public Health, Department of Epidemiology and Biostatistics, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV, USA
3. Chief, Division of Cardiology, Denver Health Medical Center, Denver, CO, USA
4. Professor, Department of Medicine, Division of Cardiology, University of Colorado at Denver, Aurora, CO, USA