1. Institute of Pharmacology, University of Bern, Bern, Switzerland
2. Clinic of Angiology, University Hospital Zurich, Zurich, Switzerland
3. Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
4. Department of Internal Medicine, Cantonal Hospital Baden, Baden, Switzerland
5. Clinic of Angiology, Lausanne University Hospital, Lausanne, Switzerland
6. Department of Internal Medicine, University Hospital Basel, Basel, Switzerland
7. Department of Internal Medicine, Limmattal Hospital, Schlieren, Switzerland
8. Division of General Internal Medicine, Bern University Hospital, University of Bern, Bern, Switzerland
9. Division of Angiology, Department of Internal Medicine, Cantonal Hospital Fribourg, Fribourg, Switzerland
10. Department of Internal Medicine, Cantonal Hospital Obwalden, Sarnen, Switzerland
11. Department of Internal Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
12. Department of Internal Medicine, Regional Hospital Burgdorf, Burgdorf, Switzerland
13. Division of Angiology and Hemostasis, Faculty of Medicine, Geneva University Hospitals, Geneva, Switzerland