1. Department of Haematology Erasmus MC University Medical Centre Rotterdam Rotterdam The Netherlands
2. Netherlands Haemophilia Society Leiden The Netherlands
3. Department of Haematology Radboud University Medical Centre Nijmegen and Haemophilia Treatment Centre Nijmegen‐Eindhoven‐Maastricht Nijmegen The Netherlands
4. Department van Creveldkliniek University Medical Centre Utrecht Utrecht University Utrecht The Netherlands
5. Department of Haematology University Medical Centre Groningen University of Groningen Groningen The Netherlands
6. Department of Paediatric Haematology and Oncology Erasmus MC Sophia Children's Hospital University Medical Centre Rotterdam Rotterdam The Netherlands
7. Department of Clinical Epidemiology Leiden University Medical Centre Leiden The Netherlands
8. Jon J. van Rood Centre for Clinical Transfusion Medicine Sanquin Research Leiden The Netherlands
9. Amsterdam UMC University of Amsterdam Emma Children's Hospital Paediatric Haematology Amsterdam The Netherlands
10. Sanquin Research Department of Molecular Cellular Haemostasis Amsterdam The Netherlands
11. Department of Internal Medicine Division of Thrombosis and Haemostasis Leiden University Medical Centre Leiden The Netherlands
12. Einthoven Laboratory for Vascular and Regenerative Medicine Leiden University Medical Centre Leiden The Netherlands