1. Physiotherapist at Bologna University Hospital Authority Sant'Orsola-Malpighi, Bologna, Italy
2. Researcher in Medical Statistics at Bologna University, Bologna, Italy
3. Doctors at the Cardiac Surgery Department, Sant'Orsola-Malpighi Polyclinic, Bologna University, Bologna, Italy
4. Cardiac Surgeon with the Heart and Lung Transplantation Program, Cardiac Surgery Department, Sant'Orsola-Malpighi Polyclinic, Bologna University, Bologna, Italy