Affiliation: | a Division of Surgery, Medical University of Vienna, Austria b Division of Surgical Research, Medical University of Vienna, Austria c Division of Thoracic Surgery, Ruhrland Klinik, Essen-Heidhausen, Germany d Division of Internal Medicine, University of Essen, Germany e Division of Internal Medicine, Medical University of Vienna, Austria f Section of Clinical Biometrics, Medical University of Vienna, Austria g Division of Surgery, Landesklinikum St Pölten, Austria h Division of Thoracic Surgery, Medical University of Vienna, Austria i Department of Scientific Computing, University of Vienna, Austria |