1. Department of General, Visceral and Transplantation Surgery, Johannes Gutenberg University Hospital Mainz, Mainz, Germany
2. Institute for Neurosurgical Pathophysiology, Johannes Gutenberg University Hospital Mainz, Mainz, Germany
3. Department of Pathology, University Hospital Mannheim, Mannheim, Germany
4. Department of Visceral, Transplant-, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany