1. Centre for Haematology; Imperial College London; London UK
2. Department of Haematology, Queen Elizabeth Hospital, University Hospitals Birmingham; Birmingham UK
3. National Centre for Coagulation Disorders; St James's Hospital; Dublin Ireland
4. Royal Manchester Children's Hospital; Manchester UK
5. Department of Haematology; Royal Infirmary; Glasgow UK
6. Sheffield Diagnostic Genetics Service; Sheffield Children's NHS Foundation Trust & Department of Cardiovascular Science; University of Sheffield; Sheffield UK
7. Oxford University Hospitals; Oxford UK