1. Van Creveldkliniek University Medical Center Utrecht Utrecht University Utrecht The Netherlands
2. Center for Child Development, Exercise and Physical Literacy Children’s Hospital of the University Medical Center Utrecht Utrecht University Utrecht The Netherlands
3. Child Health Evaluative Sciences Program Research Institute The Hospital for Sick Children Toronto Ontario Canada
4. Department of Pediatrics Faculty of Medicine and the Institute of Health Policy Management & Evaluation Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada
5. Division of Rheumatology The Hospital for Sick Children Toronto Ontario Canada
6. Department of Pediatrics Clinic of Coagulation Disorders Karolinska University Hospital Stockholm Sweden
7. Haemophilia Center Great Ormond Street Hospital for Children NHS Foundation Trust London UK
8. Department of Rehabilitation Amsterdam UMC University of Amsterdam Amsterdam Netherlands
9. Department of Physiotherapy European University of Madrid Madrid Spain
10. Royal Victoria Eugenia Foundation Madrid Spain
11. Fishemo CEE Spanish Federation of Hemophilia Madrid Spain
12. Department of Haematology Oslo University Hospital Oslo Norway
13. Hemophilia and Thrombosis Center University of Colorado Anschutz Medical Campus Aurora CO USA
14. Department of PMR Christian Medical College Vellore India
15. Hemophilia of Georgia Center for Bleeding & Clotting Disorders of Emory Emory University School of Medicine Atlanta GA USA
16. Department of Orthopaedics Christian Medical College Vellore India
17. CHU Sainte‐Justine Montreal Canada
18. Department of Radiology Clementino Fraga Filho University HospitalFederal University of Rio de Janeiro Rio de Janeiro Brazil
19. Clinic of Children’s diseases Faculty of Medicine Vilnius University Vilnius Lithuania
20. Department of Rehabilitation Paediatric Physical Therapy Radboud university medical center Nijmegen The Netherlands