1. Cedars‐Sinai Smidt Heart Institute Los Angeles CaliforniaUSA
2. Inova Heart and Vascular Institute Falls Church VirginiaUSA
3. Baylor University Medical Center Dallas TexasUSA
4. Advocate Christ Medical Center Oak Lawn IllinoisUSA
5. St. Vincent’s Hospital Sydney Australia
6. Drexel University Philadelphia PennsylvaniaUSA
7. Mount Sinai Hospital New York New YorkUSA
8. Mayo Clinic Rochester MinnesotaUSA