1. Haemophilia Centre and Thrombosis Unit; Royal Free Hospital; London; UK
2. Haemophilia Treatment Centre; Sainte-Justine Hospital; Montreal; QC; Canada
3. Department of Internal Medicine; A. Bianchi Bonomi Haemophilia and Thrombosis Centre; Milan; Italy
4. First Department of Internal Medicine; Division of Haematology and Blood Coagulation; Vienna; Austria
5. Haematology and Transfusion Medicine; L. Sacco University Hospital; Milan; Italy