1. Department of Cardiology Texas Heart Institute Houston TX USA
2. Division of Cardiology, Department of Internal Medicine University of Texas Southwestern Medical Center Dallas TX USA
3. Department of Cardiology Houston Methodist DeBakey Heart & Vascular Center Houston TX USA
4. Department of Cardiology Duke University Durham NC USA
5. Department of Medicine University of Mississippi Medical Center Jackson MS USA
6. Baylor Scott and White Research Institute Baylor Scott and White Health System Dallas TX USA
7. Department of Cardiology Baylor Scott & White Medical Center Dallas TX USA
8. National Heart Centre Singapore and Duke–National University of Singapore Singapore Singapore
9. St Michael's Hospital, University of Toronto Toronto ON Canada
10. Division of Cardiology, Department of Internal Medicine University of Colorado School of Medicine Denver CO USA
11. Massachusetts General Hospital, Harvard Medical School, Baim Institute for Clinical Research Boston MA USA