1. Department of Haematology; Erasmus University Medical Centre; Rotterdam the Netherlands
2. Department of Haematology; University of Groningen; University Medical Centre Groningen; Groningen the Netherlands
3. Department of Thrombosis and Haemostasis; Leiden University Medical Centre; Leiden the Netherlands
4. Einthoven Laboratory for Vascular and Regenerative Medicine; Leiden University Medical Centre; Leiden the Netherlands
5. Pediatric Haematology; Emma Children's Hospital-Academic Medical Centre; Amsterdam the Netherlands
6. Van Creveldkliniek; University Medical Centre University Utrecht; Utrecht the Netherlands
7. Department of Haematology; Radboud University Medical Centre; Nijmegen the Netherlands
8. Department of Haematology; Catharina Hospital; Eindhoven the Netherlands
9. Department of Haematology; Haga Hospital; The Hague the Netherlands
10. Netherlands Haemophilia Society; Leiden the Netherlands
11. Department of Clinical Epidemiology; Leiden University Medical Centre; Leiden the Netherlands
12. Jon J van Rood Centre for Clinical Transfusion Medicine; Sanquin Research; Leiden the Netherlands
13. Department of Pediatric Haematology; Erasmus University Medical Centre-Sophia Children's Hospital; Rotterdam the Netherlands