1. Institute for Medical Information Processing, Biometry, Epidemiology, IBE, Ludwig‐Maximilian University Munich Germany
2. Department of Hematology, Oncology Ludwig‐Maximilian University ‐ Hospital Munich Germany
3. Department of Haematology and Transfusion Medicine and National Haemophilia Centre University Hospital, Comenius University Bratislava Slovakia
4. Bohn Epidemiology Boston Massachusetts USA
5. Department of Hematology and Oncology, Unit of Internal Medicine and Haemostasis; and Department of Clinical Medicine and Surgery Federico II University Hospital Naples Italy
6. Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Angelo Bianchi Bonomi Hemophilia and Thrombosis Center Milan Italy
7. Department Hematology Bornova Ege University Children's Hospital, Izmir Turkey
8. Ludwig‐Maximilian‐University Rudolf‐Marx‐Foundation Munich Germany
9. Division of Hematology/Oncology Icahn School of Medicine, Mount Sinai New York New York USA