1. Institute of Medical Psychology; University Medical Centre Hamburg-Eppendorf; Hamburg Germany
2. Katherine Dormandy Haemophilia Centre and Haemostasis Unit; Royal Free London NHS Foundation Trust; London UK
3. Haemophilia Centre; Royal Manchester Children's Hospital; Central Manchester Foundation Trust; Manchester UK
4. University Dept of Haematology Manchester Royal Infirmary; Manchester UK
5. Haemophilia Centre; Great Ormond Street Hospital for Children NHS Foundation Trust; London UK