1. Vascular Institute Central Switzerland, Aarau, Switzerland
2. University of Cologne, Germany
3. Department of Angiology, University Hospital of Basel, Switzerland
4. Department of Radiology, Friedrich-Schiller-University, Jena University Hospital, Jena, Germany
5. University of Lucerne, Switzerland
6. University of Bern, Switzerland
7. Department of Urology, Hirslanden Clinic, Aarau, Switzerland
8. University of Applied Sciences Furtwangen, Villingen-Schwenningen, Germany