1. Department of Cardiology & Vascular Medicine, Fürst-Stirum-Klinik Bruchsal, Bruchsal, Germany
2. Vascular Centre, Klinikum Arnsberg, Arnsberg, Germany
3. Department of Angiology, University of Graz, Graz, Austria
4. Department of Surgery, University Hospital Munich, Munich, Germany
5. Department of Cardiology & Vascular Medicine, GRN Hospital Weinheim, Weinheim, Germany