1 Department of Cardiothoracic and Vascular Surgery, Westpfalz-Klinikum, Kaiserslautern, Germany.
2 Department of Thoracic Surgery and Thoracic Endoscopy, Ruhrlandklinik, West German Lung Center, University Hospital Essen, University Duisburg-Essen Essen, Germany.
3 Department of Thoracic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
4 Department of Cardiothoracic Surgery, University Hospital of Patras, Patras, Greece.
5 Department of General Surgery, University Hospital of Patras, Patras, Greece.
6 Department of Interventional Radiology, University Hospital of Patras, Patras, Greece.
7 Department of Vascular Surgery, University Hospital of Patras, Patras, Greece.