1. Department of Hematology Erasmus MC, University Medical Center Rotterdam Rotterdam The Netherlands
2. Department of Pediatric Hematology Erasmus MC, University Medical Center RotterdamSophia Children's Hospital Rotterdam The Netherlands
3. Department Hematology University Medical Center Groningen Groningen The Netherlands
4. van Creveld kliniek/Department Benign Hematology University Medical Center Utrecht Utrecht The Netherlands
5. Department of Pediatric Hematology Emma Children’s HospitalAmsterdam UMCUniversity of Amsterdam Amsterdam The Netherlands
6. Department of Plasma Proteins Sanquin Research Amsterdam Netherlands
7. Department Clinical Epidemiology Leiden University Medical Center Leiden The Netherlands
8. Jon J van Rood Center for Clinical Transfusion Medicine Sanquin Research Leiden The Netherlands
9. Netherlands Hemophilia Society Nijkerk The Netherlands
10. Department Hematology Radboud University Medical Center Nijmegen The Netherlands
11. Department Internal Medicine division Thrombosis and Hemostasis Leiden University Medical Center Leiden The Netherlands
12. Einthoven Laboratory for Vascular and Regenerative Medicine Leiden University Medical Center Leiden The Netherlands