1. Santa Creu i Sant Pau Hospital; Cardiovascular Research Center; CSIC-ICCC; Barcelona Spain
2. Heart Research Follow-up Program, Cardiology Division; University of Rochester Medical Center; Rochester NY
3. Coronary Care Unit, IdISPa; Son Espases Hospital; Palma de Mallorca Spain
4. Heart Hospital, Tampere University Hospital; University of Tampere; Finland
5. The Section of Cardiology; The Department of Medicine; Baylor College of Medicine; Houston TX
6. Institute of Cardiology; Warsaw Poland
7. The New York-Presbyterian Hospital-Weill Cornell Medical Center, New York; NY
8. Department of Cardiac Rehabilitation and Noninvasive Electrocardiology, National Institute of Cardiology; Warsaw Poland
9. Cardiovascular Department (AFNET) Clinical University Institute Münster (UKM); Münster Germany
10. Cardiovascular Research Center; Maastrich The Netherlands