1. Department of Pediatric Hematology Emma Children's Hospital Amsterdam UMC location University of Amsterdam Amsterdam the Netherlands
2. Amsterdam Reproduction & Development, Public Health Amsterdam UMC location University of Amsterdam Amsterdam the Netherlands
3. Department of Pediatric Hematology Erasmus MC Sophia Children's Hospital Erasmus University Medical Center Rotterdam Rotterdam the Netherlands
4. Department of Clinical Epidemiology Leiden University Medical Center Leiden the Netherlands
5. Center for Benign Haematology Thrombosis and Haemostasis Van Creveldkliniek University Medical Center Utrecht Utrecht University Utrecht the Netherlands
6. Department of Internal Medicine Division of Thrombosis and Hemostasis Leiden University Medical Center Leiden the Netherlands
7. Department of Hematology Maastricht University Medical Centre Maastricht the Netherlands
8. Department of Pediatrics University Medical Center Groningen Groningen the Netherlands
9. Department of Hematology HagaZiekenhuis The Hague the Netherlands
10. Department of Internal Medicine Maxima Medical Centre Eindhoven the Netherlands
11. Department of Vascular Medicine Amsterdam UMC location University of Amsterdam Amsterdam The Netherlands
12. Amsterdam Cardiovascular Sciences Pulmonary Hypertension & Thrombosis Amsterdam The Netherlands
13. Department of Hematology Radboud University Medical Center Nijmegen the Netherlands
14. Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht Nijmegen the Netherlands
15. Department of Hematology Erasmus MC Erasmus University Medical Center Rotterdam Rotterdam the Netherlands
16. Netherlands Hemophilia Patient Society (NVHP) Nijkerk the Netherlands
17. Department of Molecular Cellular Hemostasis Sanquin Research and Landsteiner Laboratory Amsterdam the Netherlands