1. Department of Thoracic Surgery, AUSL Romagna Teaching Hospital, Ravenna, Italy
2. Thoracic Surgery Unit, University College London Hospital, London, UK
3. Department of Thoracic Surgery, St. James's University Hospital, Leeds, UK
4. Department of Surgery, ESS Thoracic Surgery, Thoracic Surgery Clinic, University Hospital St. Marina, Varna, Bulgaria
5. Thoracic Surgery Unit, Azienda Ospedaliera San Paolo, Milan, Italy
6. Division of Thoracic Surgery, Department of Thoracic Surgical and Medical Oncology, National Cancer Institute—Pascale Foundation, Naples, Italy
7. Division of Thoracic Surgery, McMaster University, St. Joseph’s Healthcare, Hamilton, Ontario, Canada
8. Department of Thoracic Surgery, AUSL Romagna Teaching Hospital, Forlì, Italy
9. Thoracic Surgery, Hospital Universitario de Salamanca, Salamanca, Spain
10. Department of Thoracic Surgery, Jagiellonian University Collegium Medicum, John Paul II Hospital, Krakow, Poland
11. Department of Thoracic Surgery, Nouvel Hopital Civil, Strasbourg, France
12. Department of Thoracic Surgery, University of Torino, Turin, Italy
13. Department of Thoracic Surgery, Hospital Germans Trias i Pujol, Badalona, Spain
14. Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland
15. Department of Thoracic Surgery, Marmara University Faculty of Medicine, Istanbul, Turkey
16. Department of General Thoracic Surgery, Istanbul Medical Faculty, Istanbul, Turkey