1. Department of Clinical Epidemiology; Leiden University Medical Center; Leiden the Netherlands
2. A. Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milano; Università degli Studi di Milano; Milan Italy
3. Einthoven Laboratory for Experimental Vascular Medicine; Leiden University Medical Center; Leiden the Netherlands
4. Center for Stroke Research; Charité-Universitätsmedizin; Berlin Germany
5. Centre for Haematology; Faculty of Medicine; Imperial College London; London UK
6. Department of Medical Statistics and Bioinformatics; Leiden University Medical Center; Leiden the Netherlands
7. Department of Hematology; Erasmus University Medical Center; Rotterdam the Netherlands
8. Institute of Cardiovascular and Medical Sciences; University of Glasgow; Glasgow UK
9. Department of Thrombosis and Hemostasis; Leiden University Medical Center; Leiden the Netherlands