1. Clinic of Angiology, University Hospital Zürich, Zürich, Switzerland
2. Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
3. Department of Angiology, Arnsberg Medical Center, Arnsberg, Germany
4. Department of Medicine II, Division of Angiology, Medical University of Vienna, Vienna, Austria
5. European Vascular Center Aachen-Maastricht, University Hospital RWTH Aachen, Aachen, Germany
6. Department of Radiology, Interventional Radiology and Nuclear Medicine, Clinic of Friedrichshafen, Friedrichshafen, Germany
7. Department of Cardiology, Angiology, and Pneumology, Heidelberg University Hospital, Heidelberg, Germany
8. Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center, Homburg, Saar, Germany
9. Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, Bern, Switzerland