1. Haemophilia Centre, Medical Clinic II, Institute of Transfusion Medicine Goethe University Hospital Frankfurt am Main Germany
2. Coagulation Research Center Duisburg Germany
3. “Aghia Sophia” Children's Hospital Athens Greece
4. Department of Haematology, Blood Neoplasms and Bone Marrow Transplantation Medical University of Wroclaw Wroclaw Poland
5. Department of Haematology University Hospital Jagiellonian University Medical College Cracow Poland
6. Department of Pediatrics Institute of Medical Sciences, Medical College University of Rzeszow Rzeszow Poland
7. Katharine Dormandy Haemophilia and Thrombosis Centre Royal Free Hospital London UK
8. St George's Healthcare NHS Trust Haemophilia Centre London UK
9. Imperial College, London UK and Imperial College Healthcare NHS Trust London UK
10. Children's Haemophilia Centre Evelina London Children's Hospital London UK
11. CSL Behring Marburg Germany
12. Medical University of Vienna Vienna Austria