1. Cardiology Section University of California San Francisco California USA
2. Department of Cardiovascular Diseases Mount Sinai St. Luke's Hospital New York New York USA
3. Columbia University Irving Medical Center/New York‐Presbyterian Hospital Cardiovascular Research Foundation New York New York USA
4. Cardiology Division University of Texas Health Science Center Houston Texas USA
5. Cardiovascular Division Knight Cardiovascular Institute, Oregon Health & Sciences University Portland Oregon USA
6. Reid Heart Center First Health of the Carolinas Pinehurst North Carolina USA
7. Geisinger Medical Center Danville Pennsylvania USA
8. Stroobants Cardiovascular Group Lynchburg Virginia USA
9. Division of Cardiology University of Utah Health Salt Lake City Utah USA