1. Department of Paediatric Haematology; Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam; Rotterdam Netherlands
2. Hospital Pharmacy - Clinical Pharmacology; Academic Medical Centre Amsterdam; Amsterdam Netherlands
3. Department of Haematology; Erasmus University Medical Centre Rotterdam; Rotterdam Netherlands
4. Department of Haematology; University of Groningen; University Medical Centre Groningen; Groningen Netherlands
5. Department of Haematology; Radboud University Medical Centre; Nijmegen Netherlands
6. Department of Thrombosis and Haemostasis; Leiden University Medical Centre; Leiden Netherlands
7. Department of Paediatric Haematology; Academic Medical Centre Amsterdam; Amsterdam Netherlands