1. Unit of Clinical and Molecular Epidemiology, IRCCS San Raffaele Pisana Via di Valcannuta, 247, I-00166 Rome, Italy
2. Unit of Thoracic Surgery, Arcispedale Santa Maria Nuova-IRCCS, Reggio Emilia, Italy
3. Unit of Pulmonary Rehabilitation, IRCCS San Raffaele Pisana Via di Valcannuta, 247, I-00166 Rome, Italy
4. Scientific Direction, IRCCS San Raffaele Pisana Via di Valcannuta, 247, I-00166 Rome, Italy