1. Clinical Trials Center; Cardiovascular Research Foundation; New York New York
2. Division of Cardiology; NewYork-Presbyterian Hospital/Columbia University Medical Center; New York New York
3. Gagnon Cardiovascular Institute; Morristown Medical Center; Morristown New Jersey
4. Hôpital du Sacré-Coeur de Montréal; Montréal Québec Canada
5. Latvian Center of Cardiology; Paul Stradins Clinical University Hospital; Riga Latvia
6. 1st Department of Cardiology; University of Medical Sciences; Poznan Poland
7. Mount Sinai Medical Center; New York New York
8. Gottsegen Hungarian Institute of Cardiology; Budapest Hungary
9. Department of Cardiology; Onze Lieve Vrouwe Gasthuis; Amsterdam The Netherlands
10. 2nd Department of Medicine and Cardiology Center; University of Szeged; Szeged Hungary
11. Wellmont CVA Heart Institute; Kingsport Tennessee