1. Department of Cardiology, Minneapolis Heart Institute Minneapolis Heart Institute Foundation Minneapolis Minnesota USA
2. Eastern Health Memorial University of Newfoundland St. John's Newfoundland Canada
3. Division of Cardiovascular Medicine Brigham and Women's Hospital Boston Massachusetts USA
4. Division of Cardiology, VCU Health Pauley Heart Center Virginia Commonwealth University Richmond Virginia USA
5. Department of Cardiology Golden Jubilee National Hospital Glasgow UK
6. Division of Cardiovascular Medicine, Department of Interventional Cardiology, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center Cleveland Ohio USA
7. Department of Cardiology Freeman Hospital Newcastle upon Tyne UK
8. Department of Cardiology University of Texas Southwestern Medical Center Dallas Texas USA
9. Department of Cardiology Veterans Affairs North Texas Health Care System Dallas Texas USA
10. Division of Cardiology University of Washington Seattle Washington USA
11. Department of Cardiovascular Diseases Mayo Clinic Rochester Minnesota USA