1. Department of Surgery, the Academic Medical CenterUniversity of Amsterdam Amsterdam the Netherlands
2. Department of Surgical Oncologythe University Medical Center Utrecht Utrecht the Netherlands
3. The Center for VisceralThoracic and Specialized Tumor Surgery, Hirslanden Medical Center Zurich Switzerland
4. Division of Thoracic Surgery, Zhongshan HospitalFudan University Shanghai China
5. Moscow State University of Medicine and Dentistry Moscow Russia
6. Faculty of MedicineUniversity of Freiburg Medical Center Freiburg Germany