1. Lancashire Cardiac Centre, Blackpool, England
2. IRCCS Ospedale Galeazzi-Sant’Ambrogio, Milan, Italy
3. European Interbalkan Medical Center, Thessaloniki, Greece
4. Ospedale del Cuore-Fondazione Monasterio, Massa, Italy
5. Deutsches Herzzentrum der Charite, Berlin, Germany
6. St. Elizabeth Healthcare, Edgewood, KY, USA
7. University of Chicago Medicine, IL, USA
8. Endoscopic Cardiac Surgeons Club, Paris, France