1. Academic Thoracic Surgery Unit, A.O.U. Policlinico-Vittorio Emanuele, Department of Surgery, University of Catania, Catania, Italy
2. Radiotherapy Unit, A.O.U. Policlinico-Vittorio Emanuele, University of Catania, Catania, Italy
3. Oncology Unit, A.O.U. Policlinico-Vittorio Emanuele, Catania, Italy
4. Radiology Unit, A.O.U. Policlinico-Vittorio Emanuele, University of Catania, Catania, Italy
5. Pneumology Unit, A.O.U. Policlinico-Vittorio Emanuele, Catania, Italy
6. Department of Pathology, University of Catania, Catania, Italy
7. Department of Clinical & Molecular Bio-Medicine, University of Catania, Catania, Italy