[1] Fdn IRCCS Policlin San Matteo, Div Cardiol, Pavia, Italy
[2] Fdn IRCCS Policlin San Matteo, Div Cardiac Surg, Pavia, Italy
[3] San Paolo Hosp, Div Cardiol & Cardiac Intens Care Unit, Savona, Italy
[4] Fdn IRCCS Policlin San Matteo, AR2 Anestesia & Terapia Intensiva Cardiotorac, Pavia, Italy
[5] Fdn IRCCS Policlin San Matteo, Viale Golgi 19, I-27100 Pavia, Italy