1. Van Creveldkliniek; University Medical Centre; Utrecht the Netherlands
2. Haemophilia Treatment Centre; Emma Children's' Hospital- Academical Medical Centre; Amsterdam the Netherlands
3. Department of Paediatric Haematology; Erasmus University Medical Centre - Sophia Children's Hospital; Rotterdam the Netherlands
4. Nursing Science; Faculty of Health Care; University of Applied Science; Utrecht the Netherlands
5. Nursing Science; University Medical Centre; Utrecht the Netherlands
6. Julius Centre for Health Sciences and Primary Care; University Medical Centre; Utrecht the Netherlands