1. Department of Medicine and Surgery, University of Parma, 43121 Parma, Italy
2. Department of Experimental Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy
3. Thoracic Surgery Unit, Regina Elena National Cancer Institute, 00144 Rome, Italy
4. Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, 00133 Rome, Italy