1. Department of Thoracic Surgery University Medical Center Regensburg Regensburg Germany
2. Department of Thoracic Surgery Hospital Barmherzige Brüder Regensburg Regensburg Germany
3. Department of Thoracic Surgery Niels‐Stensen‐Kliniken Ostercappeln Germany
4. Department of Thoracic Surgery, Thoraxzentrum Ruhrgebiet Academic Hospital, University Duisburg‐Essen Herne Germany
5. Department of Thoracic Surgery Ibbenbueren General Hospital Ibbenbueren Germany
6. Department of Thoracic and Vascular Surgery Lung Cancer Center DKG, SRH Wald‐Klinikum Gera Gera Germany
7. LungenClinic Grosshansdorf Großhansdorf Germany
8. Department of Thorax, Vascular and Endovascular Surgery Chemnitz Hospital Chemnitz Germany
9. Clinic of Thoracic Surgery Waldburg‐Zeil Clinic Wangen im Allgäu Germany