Marcello Migliore1, Semih Halezeroglu2, Antoon Lerut3. 1. Thoracic Unit, Department of General Surgery & Medical Specialties, University of Catania, Catania, Italy. 2. Department of Thoracic Surgery, Acıbadem University, School of Medicine, Istanbul, Turkey. 3. Thoracic Surgery, Catholic University of Leuven, Belgium.