1 Thoracic Surgery, Department of Cardio-thoracic Surgery, University Hospital of Wales, UK and Department of Surgery and Medical Specialties, University of Catania, Catania, Italy.
2 Department of Thoracic Surgery, University Medical Center Regensburg, Regensburg, Germany.
3 Department of Thoracic Surgery, Catholic University of Barcelona, Barcelona, Spain.
4 Thoracic Surgery, University of Pisa, Pisa, Italy.
5 Thoracic Surgery, Department of Operational Medicine, Faculty of Medicine, University of Pécs, Pécs, Hungary.