1. Clinic for Angiology, University Hospital of Zurich, University of Zurich, Switzerland
2. Institute of Pharmacology, University of Bern, Bern, Switzerland
3. Medical Faculty, University of Bern, Bern, Switzerland
4. Division of Angiology, Cantonal Hospital Fribourg, Fribourg, Switzerland
5. Clinic for Angiology, Inselspital Bern, University of Bern, Bern, Switzerland
6. Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany