1. Division of Thoracic Surgery, Humanitas Clinical and Research Center, Milan, Italy
2. Division of General Thoracic Surgery, Inselspital, University Hospital of Bern, Bern, Switzerland
3. Department of Cardiothoracic Surgery, James Cook University Hospital, Middlesbrough, UK
4. Unit of Thoracic Surgery, Azienda Ospedaliera S. Camillo Forlanini, Lazzaro Spallanzani Hospital, Rome, Italy
5. Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
6. Department of Thoracic Surgery, CHU Rouen, Rouen, France
7. Unit of Thoracic Surgery, Medical Campus Lake Constance, Weingarten, Germany
8. Department of Cardiothoracic Surgery, Isala Heart Center, Zwolle, Netherlands
9. Department for General-, Visceral-, Thoracic, Transplantation-, and Pediatric Surgery, University Hospital of Schleswig Holstein, Kiel, Germany
10. Division of Thoracic Surgery, Maggiore-Teaching Hospital, Bologna, Italy
11. Department of Thoracic Surgery, Catholic University of the Sacred Heart, Rome, Italy
12. Department of Thoracic Surgery, Freeman Hospital, Newcastle Upon Tyne, UK
13. Department of Thoracic Surgery, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
14. Department of General, Visceral, Vascular and Thoracic Surgery, Competence Centre of Thoracic Surgery, Charité—Universitätsmedizin Berlin, Berlin, Germany
15. Division of Thoracic Surgery, Casa Sollievo della Sofferenza, San Giovanni Rotondo (FG), Italy
16. Division of Thoracic Surgery, Les Hôpitaux Universitaires de Strasbourg, Strasbourg, France
17. Department of Cardiothoracic Surgery, University of Pisa, Pisa, Italy
18. Department of General Thoracic Surgery, Istanbul Medical Faculty, Istanbul, Turkey