1. Division of Vascular and Endovascular Surgery, Department of General, Visceral and Transplantation Surgery, University Hospital Essen, University Duisburg-Essen, Essen, Germany
2. Department of General, Visceral and Transplantation Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
3. Institute of Pharmacology and Toxicology, Ruhr-University Bochum, Bochum, Germany
4. Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany