1. Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria
2. Division of Thoracic Surgery, Department of Surgery, Medical University of Vienna, 1090 Vienna, Austria
3. Department of General and Thoracic Surgery, University Hospital Krems, Karl Landsteiner University of Health Sciences, 3500 Krems an der Donau, Austria
4. Department of Surgery, Paracelsus Medical University, 5020 Salzburg, Austria
5. Department of Cardiac-, Vascular-, and Thoracic Surgery, Johannes Kepler University Linz, 4020 Linz, Austria
6. Department of Surgery, Elisabethinen Hospital, 4020 Linz, Austria
7. Department of Thoracic Surgery, Clinic Floridsdorf, 1210 Vienna, Austria
8. Division of Thoracic and Hyperbaric Surgery, Department of Surgery, Medical University of Graz, 8010 Graz, Austria
9. Department of Cardiac-, Thoracic- and Vascular Surgery, Klinikum Klagenfurt am Wörthersee, 9020 Klagenfurt, Austria