1. Department of Paediatrics; Kuopio University Hospital; Kuopio Finland
2. Coagulation Disorders Unit; Department of Haematology; Comprehensive Cancer Centre; European Haemophilia Comprehensive Care Centre; Helsinki University Hospital; University of Helsinki; Helsinki Finland
3. Department of Paediatrics; Tampere University Central Hospital; Tampere Finland
4. Children's Hospital; Helsinki University Hospital; European Haemophilia Comprehensive Care Centre; Helsinki Finland
5. Department of Paediatrics and Adolescent Medicine; Turku University Central Hospital; University of Turku; Turku Finland
6. Department of Children and Adolescents; PEDEGO Research Centre, and Medical Research Centre Oulu; Oulu University Hospital; University of Oulu; Oulu Finland
7. Science Service Centre; Kuopio University Hospital; Kuopio Finland
8. Pharmacoeconomics and Outcome Research Unit (PHORU); School of Pharmacy; University of Kuopio; Kuopio Finland