1. Indiana Hemophilia & Thrombosis Center Indianapolis IN USA
2. Child Health Evaluative Sciences, Research InstituteThe Hospital for Sick Children Toronto ON Canada
3. Department of Medical Imaging University of Saskatchewan and Saskatchewan Health Authority Saskatoon City Hospital SK Canada
4. Department of Pediatrics Faculty of Medicine University of Toronto Toronto ON Canada
5. Institute of Health Policy, Management and Evaluation The Dalla Lana School of Public Health University of Toronto Toronto ON Canada
6. Division of Rheumatology The Hospital for Sick Children Toronto ON Canada
7. Division of Hematology/Oncology University of California San Diego San Diego CA USA
8. Department of Medical Imaging University of TorontoThe Hospital for Sick Children Toronto ON Canada
9. Los Angeles Orthopaedic Treatment Centre Los Angeles CA USA
10. Department of Radiology Royal Infirmary of EdinburghNHS Lothian Edinburgh UK
11. University of CaliforniaSan Diego Medical Center San Diego CA USA
12. Division of Pediatric Hematology, Oncology & Marrow Transplant Department of Pediatrics Nationwide Children’s HospitalThe Ohio State University College of Medicine Columbus OH USA
13. Hemophilia and Thrombosis Center University of Colorado Anschutz Medical Campus Aurora CO USA
14. Division of Clinical Radiology Christian Medical College Vellore India
15. Katherine Dormandy Haemophilia CentreRoyal Free Hospital London UK
16. University of Washington and Washington Center for Bleeding Disorders Seattle WA USA
17. Ultrasound Department Manfang Hospital Guangzhou China
18. Haemostasis and Thrombosis Unit Division of Haematology Cliniques Universitaires Saint‐Luc Brussels Belgium
19. Hemophilia & Thrombosis Center Department of Pediatrics University of Colorado Anschutz Medical Center Aurora CO USA
20. Department of Health Sciences (DISSAL) Università di GenovaIRCCS Ospedale Policlinico San Martino Genova Italy
21. Irish Centre for Vascular Biology Royal College of Surgeons in Ireland Dublin Ireland
22. Attikon General HospitalNational and Kapodistrian University of Athens Athens Greece
23. Pediatric Hemophilia Centre/Haemostatis and Thrombosis Unit Aghia Sophia Children’s Hospital Athens Greece
24. Department of Orthopedics Unit 2 Christian Medical College Vellore India
25. Haemostasis and Thrombosis Unit Hospital LA FEUniversidad de Valencia Valencia Spain
26. Department of Hematology Christian Medical College Vellore India
27. Department of Rehabilitation Medicine Physical Therapy and MSKUS Program Washington Center for Bleeding Disorders University of Washington Seattle WA USA
28. School of Rehabilitation Science Faculty of Health Science Hamilton Niagara Regional Hemophilia ProgramHamilton Health SciencesMcMaster University Hamilton ON Canada
29. van Creveldkliniek University Medical Center Utrecht Utrecht The Netherlands
30. Department of Medical Imaging Institute of Medical Science Toronto ON Canada
31. Department of Statistical Sciences University of Toronto Toronto ON Canada
32. Diagnostic Imaging The Hospital for Sick Children Toronto ON Canada
33. Department of Pediatrics Division of Hematology/Oncology University of TorontoThe Hospital for Sick Children Toronto ON Canada