1. Division of Cardiology and McAllister Heart Institute, University of North Carolina at Chapel Hill, NC
2. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, NC
3. Division of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
4. Campbell University School of Osteopathic Medicine, Lillington, NC
5. Division of Cardiology, Medical College of Georgia at Augusta University, Augusta, GA
6. Piedmont Heart Institute, Atlanta, GA