1. Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands;
2. Department of Vascular Medicine, Academic Medical Center, Amsterdam, The Netherlands;
3. Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands;
4. Department of Hematology, Erasmus Medical Centre, Rotterdam, The Netherlands; and
5. Department of Vascular Medicine, University Medical Center Groningen, Groningen, The Netherlands