Hematology, Hospital Universitario La Paz-IDIPaz, Madrid, Spain; National Center of Haematology, Riga, Latvia; Klinik f³r Innere Medizin - Angiologie and Haemostaseologie, Vivantes Klinikum im Friedrichshain, Berlin, Germany; Biostatistics Haemophilia, Novo Nordisk A/S, Soborg, Denmark; Clinical Pharmacology, Novo Nordisk A/S, Soborg, Denmark