1. Department of Clinical Epidemiology Leiden University Medical Center Leiden the Netherlands
2. Van Creveldkliniek University Medical Center Utrecht Utrecht University Utrecht the Netherlands
3. Department of Internal Medicine Division of Thrombosis and Hemostasis Leiden University Medical Center Leiden the Netherlands
4. Department of Hematology Maastricht University Medical Centre Maastricht the Netherlands
5. Department of Paediatrics University Medical Center Groningen Groningen the Netherlands
6. Department of Hematology HagaZiekenhuis The Hague the Netherlands
7. Department of Internal Medicine Maxima Medical Centre Eindhoven the Netherlands
8. Department of Vascular Medicine Amsterdam University Medical Centres Amsterdam the Netherlands
9. Department of Hematology Radboud University Medical Center Nijmegen the Netherlands
10. Department of Hematology Erasmus University Medical Center Rotterdam the Netherlands
11. Netherlands Hemophilia Patient Society (NVHP) Nijkerk the Netherlands
12. Center for Clinical Transfusion Research Sanquin Research Leiden the Netherlands
13. Department of Pediatric Hematology Emma Children’s Hospital Amsterdam University Medical Centres University of Amsterdam Amsterdam the Netherlands