1. Department Clinical Epidemiology; Leiden University Medical Center; Leiden the Netherlands
2. Einthoven Laboratory for Experimental Vascular Medicine; Leiden University Medical Center; Leiden the Netherlands
3. Center for Stroke Research Berlin; Charité Universitätsmedizin; Berlin Germany
4. Angelo Bianchi Bonomi; Hemophilia and Thrombosis Center; Fondazione IRCCS Cá Granda Ospedale Maggiore Policlinico; Milano Italy
5. Brain Center Rudolph Magnus; Department of Neurology and Neurosurgery; University Medical Center Utrecht; Utrecht the Netherlands
6. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht the Netherlands
7. Departments of Neurology and Neurosurgery of Thrombosis and Haemostasis; Leiden University Medical Center; Leiden the Netherlands