1. Department of General, Abdominal, Vascular and Thoracic Surgery, Krankenhaus Düren, Düren, Germany
2. Department of Vascular Surgery, Marienhospital Aachen, Aachen, Germany
3. Institute of Molecular and Cellular Anatomy, RWTH Aachen, Aachen, Germany
4. Department of Diagnostic and Interventional Radiology, Krankenhaus Düren, Düren, Germany
5. Institute of Pathology, Krankenhaus Düren, Düren, Germany