1. Clinical and Interventional Angiology, UniversitätsSpital Zürich, Zurich, Switzerland
2. Clinic of Internal Medicine, Kantonsspital St. Gallen, St. Gallen, Switzerland
3. Department of Cardiovascular Surgery, Inselspital Bern, Bern, Switzerland
4. Clinic for Urology, Hirslanden Klinik Aarau, Aarau, Switzerland
5. Diagnostic Radiology, Radiologisches Zentrum Baden, Baden, Switzerland
6. Vascular Institute Central Switzerland, Aarau, Switzerland