1. Department of General-, Visceral, Vascular- and Thoracic Surgery, Ernst von Bergmann Klinikum Potsdam, Potsdam, Germany
2. Department of Pneumology, Ernst von Bergmann Klinikum Potsdam, Potsdam, Germany
3. Department of Diagnostic and Interventional Radiology, Ernst von Bergmann Klinikum Potsdam, Potsdam, Germany
4. Department of Gastroenterology and Infectiology, Ernst von Bergmann Klinikum Potsdam, Potsdam, Germany