1. Centre for Thrombosis and Haemostasis; Skåne University Hospital; Malmö Sweden
2. Klinikum Bremen-Mitte; Professor Hess Children's Hospital; Bremen Germany
3. Haematology; Royal Children's Hospital; Melbourne Vic. Australia
4. Division of Haematology/Oncology; Hospital for Sick Children; Toronto ON Canada
5. Division of Hematology, Oncology and Bone Marrow Transplant; Nationwide Children's Hospital and Ohio State University School of Medicine; Columbus OH USA
6. Department of Paediatric Haematology; Academic Medical Centre; University of Amsterdam; Amsterdam The Netherlands
7. Department of Pediatrics and Adolescent Medicine; University Hospital Rigshospitalet; Copenhagen Denmark
8. Department of Haematology; Ege University Children's Hospital; Izmir Turkey
9. National Haemophilia Centre; Tel Hashomer and the Sackler Medical School; Tel Aviv University; Tel Aviv Israel
10. Hämophiliezentrum; Wabern and Children's Hospital of the University of Bern; Bern Switzerland
11. Dr. von Hauner Children's Hospital; University of Munich; Munich Germany
12. Great Ormond Street Hospital for Children NHS Foundation Trust; Haemophilia Centre; London UK
13. Children's Hospital and Haematology; Cancer Center; Helsinki University Hospital; University of Helsinki; Helsinki Finland
14. Department of Pediatrics; University of Colorado; Aurora CO USA
15. Angelo Bianchi Bonomi Haemophilia and Thrombosis Centre; Fondazione IRCCS Ca' Granda; Milan Italy
16. Dipartimento di Ematologia ed Oncologia; Unità Trombosi ed Emostasi; Ospedale Pediatrico Giannina Gaslini; Genoa Italy
17. Our Lady's Children's Hospital; Dublin Ireland
18. Haemophilia Unit; Hospital Universitario Virgen del Rocío; Sevilla Spain
19. Department of Paediatrics; Clinic of Coagulation Disorders; Karolinska Hospital; Stockholm Sweden
20. Haemophilia-Haemostasis Unit; St. Sophia Children's Hospital; Athens Greece
21. Indiana Hemophilia and Thrombosis Center; Indianapolis IN USA
22. Hematology-Oncology Center; Beijing Children's Hospital; Capital Medical University; National Center for Children's Health; Beijing China
23. Department of Clinical Sciences Lund; Lund University; Lund Sweden