1. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
2. Duke University Clinical Research Institute, Durham, North Carolina
3. Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
4. Department of Cardiovascular Medicine, Gagnon Cardiovascular Institute, Morristown Medical Center/Atlantic Health System, Morristown, New Jersey
5. Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
6. American College of Cardiology, Washington, DC
7. Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern, Dallas
8. Cardiology Division, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts