1. Clinic of Angiology, University Hospital Zurich, Zurich, Switzerland
2. Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
3. Radiation Oncology, Cantonal Hospital Lucerne, Lucerne, Switzerland
4. Department of Surgery, Cantonal Hospital Baden, Baden, Switzerland
5. Medizinische Uniklinik, Angiologie, Kantonsspital Aarau, Switzerland