1. Department of Clinical Epidemiology; Leiden University Medical Center; Leiden the Netherlands
2. K.G Jebsen Thrombosis Research and Expertise Center (TREC); University of Tromsø; Tromsø Norway
3. Center for Clinical Transfusion Research; Sanquin Research; Leiden the Netherlands
4. Einthoven Laboratory of Experimental Vascular Medicine; Leiden University Medical Center; Leiden the Netherlands
5. Center for Stroke Research Berlin; Charité Universitätsmedizin Berlin; Berlin Germany
6. Department of Medical Statistics and Bioinformatics; Leiden University Medical Center; Leiden the Netherlands