1. Centre for Haematology, Hammersmith Campus, Imperial College Academic Health Sciences Centre, Imperial College London, London, United Kingdom;
2. Imperial College Healthcare National Health Service (NHS) Trust, London, United Kingdom;
3. National Institute for Health Research (NIHR) BioResource, Cambridge University Hospitals, Cambridge Biomedical Campus, Cambridge, United Kingdom;
4. Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Cambridge, United Kingdom;
5. Medical Research Council Biostatistics Unit, Cambridge Biomedical Campus, Cambridge, United Kingdom;
6. Department of Haematology, Barts Health National Health Service Trust, London, United Kingdom;
7. Assistance Publique–Hôpitaux de Paris, French Reference Center for Inherited Platelet Disorders, Armand Trousseau Children’s Hospital, Paris, France;
8. INSERM UMR 1170, Gustave Roussy Institute, Villejuif, France;
9. NHS Blood and Transplant, Cambridge Biomedical Campus, Cambridge, United Kingdom;
10. Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium;
11. Department of Haematology, Hampshire Hospitals NHS Foundation Trust, Basingstoke, United Kingdom;
12. Haemophilia, Haemostasis and Thrombosis Centre, Great Ormond Street Hospital for Children National Health Service Trust, London, United Kingdom;
13. Hemostasis Laboratory, Biology Center, Hospices Civils de Lyon, Bron, France;
14. Paediatric Oncology Hematology Unit, Michalon Hospital, La Tronche, France;
15. School of Biomedical Science, University of Western Australia, Crawley, WA, Australia;
16. PathWest Laboratory Medicine, Nedlands, WA, Australia;
17. Katharine Dormandy Haemophilia Centre and Thrombosis Unit, The Royal Free Hospital, London, United Kingdom;
18. Department of Haematology, Cambridge Institute for Medical Research, University of Cambridge, Cambridge Biomedical Campus, Cambridge, United Kingdom;
19. Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom; and
20. British Heart Foundation Centre of Excellence, Cambridge Biomedical Campus, Cambridge, United Kingdom