1. Van Creveldkliniek, University Medical Center Utrecht, The Netherlands;
2. Sheffield Haemophilia and Thrombosis Centre, Sheffield, United Kingdom;
3. Haemophilia Centre and Haemostasis Unit, Royal Free Hospital, London, United Kingdom;
4. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, The Netherlands;
5. Department of Hepatology and Gastroenterology, University Medical Center Utrecht, The Netherlands