1. Department of Haematology, University of Cambridge, Cambridge, United Kingdom;
2. National Institute for Health Research BioResource–Rare Diseases, Cambridge University Hospitals, Cambridge, United Kingdom;
3. Department of Haematology, Barts Health National Health Service Trust, London, United Kingdom;
4. School of Clinical Sciences, University of Bristol, Bristol, United Kingdom;
5. National Health Service Blood and Transplant, Cambridge Biomedical Campus, Cambridge, United Kingdom;
6. Medical Research Council Biostatistics Unit, Cambridge Institute of Public Health, Cambridge Biomedical Campus, Cambridge, United Kingdom;
7. Department of Haematology, Great Ormond Street Hospital for Children National Health Service Trust, London, United Kingdom;
8. Centre for Haematology, Hammersmith Campus, Imperial College Academic Health Sciences Centre, Imperial College London, London, United Kingdom;
9. Imperial College Healthcare National Health Service Trust, London, United Kingdom;
10. Crystal and Structural Chemistry, Department of Chemistry, Faculty of Science, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands;
11. Institut Hospitalo-Universitaire LIRYC, Hôpital Xavier Arnozan, Pessac, France;
12. Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium;
13. Department of Haematology, Addenbrooke’s Hospital, Cambridge University Hospitals National Health Service Foundation Trust, Cambridge Biomedical Campus, Cambridge, United Kingdom;
14. Kent Haemophilia Thrombosis Centre at East Kent Hospitals University NHS Foundation Trust, Canterbury, United Kingdom;
15. Department of Haematology, Royal Infirmary, Glasgow, United Kingdom;
16. School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom;
17. Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom; and
18. Department of Advanced Diagnosis, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan