1. Department of Surgical Science, University of Torino , Torino, Italy
2. Department of Thoracic Surgery, Azienda Ospedaliera Universitaria Città della Salute e della Scienza di Torino , Torino, Italy
3. Department of Thoracic Surgery, St. James's University Hospital , Leeds, UK
4. Department of Thoracic Surgery, Strasbourg University Hospital , Strasbourg, France
5. Department of Maternal and Child and Adult Medical and Surgical Sciences, University of Modena-Reggio Emilia , Modena, Italy
6. Department of Surgery, Clinical Center, Medical School, University of Pécs , PECS, Hungary
7. Department of Anaesthesia, Intensive Care and Emergency, Azienda Ospedaliera Universitaria Città della Salute e della Scienza di Torino , Torino, Italy