1. Piedmont Heart Institute Atlanta Georgia USA
2. Division of Cardiology Henry Ford Health System Detroit Michigan USA
3. Cardiology Division, Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
4. Minneapolis Heart Institute Minneapolis Minnesota USA
5. Division of Cardiology Brigham and Women's Hospital Boston Massachusetts USA
6. Division of Cardiology University of Washington Seattle Washington USA
7. Missouri Cardiovascular Specialists Columbia Missouri USA
8. Division of Cardiology Beth Israel Deaconess Medical Center Boston Massachusetts USA
9. Division of Cardiology New York University Langone Health New York New York USA
10. Division of Cardiology Emory University Atlanta Georgia USA
11. Torrance Memorial Medical Center Torrance California USA
12. Christ Hospital Cincinnati Ohio USA
13. Yale Cardiovascular Research Group New Haven Connecticut USA
14. Teleflex, Inc. Minneapolis Minnesota USA
15. Division of Cardiology Columbia University Medical Center New York New York USA