1. Van Creveldkliniek University Medical Center Utrecht University Utrecht Utrecht The Netherlands
2. Department of Haematology Erasmus University Medical Center Rotterdam The Netherlands
3. Department of Hematology Maastricht University Medical Center Maastricht The Netherlands
4. Department of Vascular Medicine Amsterdam Cardiovascular Sciences Amsterdam University Medical Center Amsterdam The Netherlands
5. Department of Internal Medicine Division of Thrombosis and Haemostasis Leiden University Medical Center Leiden The Netherlands
6. Department of Pediatric Hematology Beatrix Children's Hospital University Medical Center Groningen Groningen The Netherlands
7. Van Creveld Laboratory University Medical Center Utrecht University Utrecht Utrecht The Netherlands