1Cardiothoracic Department University Hospital of Udine Udine
2Cardiac Surgery, L’Aquila Hospital L’Aquila
3Cardiac Surgery, University Hospital of Bologna Bologna
4Cardiac Surgery, University Hospital of Varese Varese
5Cardiac Surgery, European Hospital Roma
6Cardiac Surgery, San Donato IRCCS Hospital San Donato Milanese
7Cardiac Surgery, IRCCS San Martino-IST, University Hospital of Genova Genova
8Cardiac Surgery, Vicenza Hospital Vicenza
9Cardiac Surgery, Hospital of Catanzaro Catanzaro
10Cardiac Surgery, Molinette University Hospital of Torino Torino
11Cardiac Surgery, Sacco University Hospital of Milano Milano
12Cardiac Surgery, Mauriziano Hospital of Torino Torino
13Cardiac Surgery, San Raffaele IRCCS Hospital of Milano Milano
14Cardiac Surgery, Papa Giovanni XXIII Hospital of Bergamo Bergamo
15Cardiac Surgery, Poliambulanza Hospital of Brescia Brescia
16Cardiac Surgery, S. Croce Hospital of Cuneo Cuneo
17Cardiac Surgery, University Hospital of Bari Bari
18Cardiothoracic Department University Hospital of Maastricht Maastricht