1. St. Joseph's Hospital CardiologyLiverpool, New York New York
2. Cardiovascular Research FoundationNew York New York
3. Thoraxcenter‐Erasmus UniversityRotterdam The Netherlands
4. HeartCenterUniversitäts‐Herzzentrum Freiburg‐Bad KrozingenBad Krozingen Germany
5. Stanford University School of MedicineStanford California
6. Bern University HospitalBern Switzerland
7. Instituto Cardiovascular de Buenos AiresBuenos Aires Argentina
8. Heart Center of the IsarMunich Germany
9. MonashHeartMonash UniversityMelbourne Australia
10. CardiocenterCharles, UniversityPrague Czech Republic
11. Shonan Kamakura General Hospital Kanagawa Japan
12. Brigham and Women's Hospital and Harvard Medical SchoolBoston Massachusetts