1. Department of Cardiology and Angiology; University of Giessen, Medizinische Klinik I; Giessen Germany
2. Department of Cardiology; Deutsches Herzzentrum Muenchen; Munich Germany
3. Krankenhaus der Barmherzigen Brüder Trier; Trier Germany
4. Ospedale San Raffaele; Milan Italy
5. Department of Cardiology and Angiology; University of Münster; Münster Germany
6. Department of Cardiology; University of Cologne; Cologne Germany
7. National Heart Centre Singapore, Duke-NUS Medical School; Singapore, Singapore
8. Department of Cardiology; Segeberger Kliniken; Bad Segeberg Germany