1. Hemophilia Center University Hospital of Padua Padua Italy
2. Regina Margherita Children Hospital of Turin Turin Italy
3. Hemophilia Center Angelo Bianchi Bonomi Center IRCCS Ca 'Granda Foundation Maggiore University Hospital of Milan Milan Italy
4. Centre for Bleeding Disorders Careggi University Hospital of Florence Florence Italy
5. Regional Reference Centre for Inherited Bleeding Disorders University Hospital of Parma Parma Italy
6. Cellular Biotecnology and Hematology Department Umberto I University Hospital of Rome Rome Italy
7. Hemophilia and Thrombosis Center S.Giovanni Bosco Hospital of Neaples Neaples Italy
8. Haemophilia and Thrombosis Center Giovanni XXIII Hospital of Bari Bari Italy
9. Pediatric Onco‐Haematology Center Microcitemico Hospital of Cagliari Cagliari Italy
10. Hemostasis and Thrombosis Unit Molinette Hospitalf of Turin Turin Italy
11. Hematology Department Center of Hemorrhagic and Thrombotic Diseases University of Palermo Palermo Italy