1. Department of Pediatrics Hotel Dieu de France Beirut Lebanon
2. Children's Hospital Mohamed V University Rabat Morocco
3. CHU Bicêtre AP‐HP Le Kremlin, Bicêtre France
4. CH Chambery Chambery France
5. Clinical Development Laboratoire français du Fractionnement et des Biotechnologies (LFB) Les Ulis France
6. Hematology Division Hemophilia Comprehensive Care Center Louis Pradel Hospital University Lyon1, Bron France