1 1 Division of Thoracic Surgery and Lung Transplantation, ISMETT-UPMC Italy, Palermo, Italy. 2 Address correspondence to: Alessandro Bertani, M.D., Ph.D., Division of Thoracic Surgery and Lung Transplantation, ISMETT-UPMC Italy, Palermo, 1, Via Tricomi 90127 Palermo, Italy.