1. Unit of Thoracic Surgery, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, Piazza Giulio Cesare 11, 70124 Bari, Italy
2. Unit of Pneumology, Hospital “Vito Fazzi”, 73100 Lecce, Italy
3. National Centre on Addiction and Doping, Istituto Superiore di Sanità, 00161 Rome, Italy
4. Unit of Pathology, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
5. Unit of Pneumology, University of Pisa, 56126 Pisa, Italy