1. Agency for Haemophilia University Hospital of Florence Florence Italy
2. Haemophila Centre of University Hospital Santa Maria della Misericordia Perugia Italy
3. Haematology Department of Biotechnology and Haematology Sapienza University of Rome Rome Italy
4. Haemophilia Center of University Hospital Padua Italy
5. Health Information Research Unit Department of Clinical Epidemiology and Biostatistic and Hemophilia Clinic Department of Medicine McMaster University Hamilton ON Canada