1. Hematology; Cheikh Anta Diop University; Dakar Senegal
2. Laboratory of Genetic and Molecular Biology; Cochin Hospital; APHP; Paris France
3. Laboratory of Hemostasis; Hôpital Universitaire Necker-Enfants Malades; AP-HP; Paris France
4. Haemophilia Treatment Centre; Department of Haematology; Hôpital Universitaire Necker-Enfants Malades; AP-HP; Paris France