[1] HZRM, Haemophilia Ctr Rhein Main, Morfelden, Germany
[2] Malmo Univ Hosp, Malmo Ctr Thrombosis & Haemostasis, Malmo, Sweden
[3] Hop Edouard Herriot, Dept Haematol, Lyon, France
[4] Univ Hosp Frankfurt, Dept Paediat, Frankfurt, Germany
[5] INSERM, Ctr Rech Cordeliers, Paris, France
[6] Univ Bonn, Inst Expt Haematol & Transfus Med, Bonn, Germany