1. Royal London Haemophilia Centre Barts and The London School of Medicine and Dentistry London UK
2. Clinic of Haematology National Specialized Hospital for Active Treatment of Haematologic Diseases Sofia Bulgaria
3. National Research Center for Hematology Moscow Russia
4. Iqvia Reading UK
5. Guy's and St Thomas' NHS Foundation Trust and Kings College London London UK
6. Federal State Budget Institution of Science “Kirov Scientific Research Institute of Hematology and Blood Transfusion of the Federal Medical‐Biological Agency" Kirov Russia
7. Department of Haematology Glasgow Royal Infirmary Glasgow UK
8. Katharine Dormandy Haemophilia and Thrombosis Centre Royal Free London NHS Foundation Trust London UK
9. University Multiprofile Hospital for Active Treatment “Sveti Georgi” and Medical University Plovdiv Plovdiv Bulgaria
10. Department of Hematology University Hospital of St. Marina Varna Bulgaria
11. Alnylam Pharmaceuticals Cambridge MA USA
12. Sanofi Cambridge MA USA
13. Department of Medicine University of Pittsburgh Pittsburgh PA USA
14. Hemophilia Center of Western Pennsylvania Pittsburgh PA USA