1. Katholisches Krankenhaus Bochum, St. Josef Hospital, Department of Anesthesiology, Ruhr-University Bochum, Germany;
2. Department of Life Science Engineering, University of Applied Sciences, Giessen, Germany;
3. Department of Surgery, Sana Hospital Lichtenberg, Berlin, Germany;
4. Department of Vascular Surgery, Städtisches Klinikum Bogenhausen, Munich, Germany