Analyses of the FranceCoag cohort support differences in immunogenicity among one plasma-derived and two recombinant factor VIII brands in boys with severe hemophilia A oleh Thierry Calvez, Hervé Chambost, Roseline d’Oiron, Vincent Dalibard, Virginie Demiguel, Alexandra Doncarli, Yves Gruel, Yoann Huguenin, Patrice Lutz, Chantal Rothschild, Christine Vinciguerra, Jenny Goudemand, for FranceCoag Collaborators