1. Division of Thoracic Surgery, Cardiac-Thoracic and Vascular Department, University Hospital of Pisa, Pisa, Italy
2. Department of Clinical and Experimental Medicine, Neurology Unit, University Hospital of Pisa, Pisa, Italy
3. Unit of Respiratory Medicine, Department of Critical Area and Surgical, Medical and Molecular Pathology, University Hospital of Pisa, Pisa, Italy
4. Thoracic Surgery Unit, Department of Medical, Surgical and Neurosciences, University of Siena, Siena, Italy