1. Columbia University Medical Center/NewYork Presbyterian Hospital; New York New York
2. Cardiovascular Research Foundation; New York New York
3. Hôpital Du Sacré-Coeur De Montréal, Université De Montréal; Montréal Québec Canada
4. Mount Sinai Medical Center; New York New York
5. 1st Department of Cardiology; University of Medical Sciences; Poznan Poland
6. Latvian Center of Cardiology, Paul Stradins Clinical University Hospital; Riga Latvia
7. Gottsegen Hungarian Institute of Cardiology; Budapest Hungary
8. Department of Cardiology; OLVG, Onze Lieve Vrouwe Gasthuis; Amsterdam The Netherlands
9. 2nd Department of Medicine and Cardiology Center Medical Faculty; Albert Szent-Györgyi Clinical Center, University of Szeged- Department of Cardiology; Szeged Hungary
10. Wellmont CVA Heart Institute; Kingsport Tennessee
11. Department of Cardiology; Academic Medical Center; Amsterdam The Netherlands
12. Department of Interventional Cardiology; University Medical Center Utrecht; Utrecht The Netherlands
13. Centro Cardiologico Monzino; University of Milan; Milan Italy
14. Division of Cardiovascular Medicine; Stanford University Medical Center; Stanford California
15. Institut Cardiovasculaire Paris Sud; Hôpital Privé Jacques Cartier; Massy France
16. MediQuest Research Group; Ocala Florida
17. Azienda Ospedaliera Di Padova; Padova Italy
18. Thoraxcenter; Erasmus Medical Center; Rotterdam The Netherlands
19. Tryton Medical Inc.; Durham North Carolina
20. Harvard Clinical Research Institute; Beth Israel Deaconess Medical Center; Boston Massachusetts
21. Dartmouth-Hitchcock Medical Center; New Hampshire Lebanon