1. Centre for Bleeding Disorders and Coagulation, Department of Oncology Careggi University Hospital Firenze Italy
2. Blood Transfusion Centre, National Reference Centre for Congenital Bleeding Disorders Laiko General Hospital Athens Greece
3. CSL Behring Hattersheim am Main Germany
4. Department of Haematopathology Hospital Clinic of Barcelona Barcelona Spain
5. Clinical Coagulation Research Unit Lund University Malmö Sweden