1. University Medical Center Regensburg, Institute of Diagnostic Radiology, Regensburg
2. University Hospital Carl Gustav Carus Dresden, Department of Visceral, Thoracic and Vascular Surgery, Dresden
3. University Hospital Carl Gustav Carus Dresden, Dresden
4. University Hospital Carl Gustav Carus Dresden, Department of Radiology, Dresden
5. University Hospital Carl Gustav Carus Dresden, Department of Pathology, Dresden, Germany