1. Van Creveldkliniek; Department of Hematology; University Medical Center Utrecht; Utrecht the Netherlands
2. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht the Netherlands
3. Coagulation Unit; Karolinska University Hospital; Stockholm Sweden
4. Department of Medicine; Karolinska Institute; Stockholm Sweden
5. Department of Paediatrics; Karolinska University Hospital; Stockholm Sweden
6. Department of Paediatrics; Lund University; Malmö Sweden
7. Malmö centre for Thrombosis and Haemostasis; Skåne University Hospital; Malmö Sweden
8. Department of Clinical Sciences; Lund University; Skåne University Hospital; Malmö Sweden