1 Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany; Clinic of Angiology, University Hospital Zurich, Zurich, Switzerland.
2 Department of Medicine, McMaster University, HSC 3V50, Department of Medicine, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
3 Department of Medicine- Thrombosis and Hemostasis, Albinusdreef 2, Leiden 2300RC, Netherlands.
4 Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany; Department of Medicine- Thrombosis and Hemostasis, Albinusdreef 2, Leiden 2300RC, Netherlands. Electronic address: f.a.klok@LUMC.nl.