1. Department of Haematology; Oxford University Hospitals NHS Foundation Trust; Oxford UK
2. NIHR BRC, Blood Theme; Oxford University; Oxford UK
3. Centre for Trauma Sciences; Blizard Institute; Queen Mary University of London; London UK
4. Department of Anaesthesia; Royal Free London NHS Foundation Trust; London UK
5. UK NEQAS for Blood Coagulation; Sheffield UK
6. Department of Anaesthesia and Intensive Care; Royal Papworth Hospital; Cambridge UK
7. Department of Obstetrics; Leicester Royal Infirmary; Leicester UK
8. Department of Haematology; School of Medicine; Cardiff University; Cardiff UK
9. Department of Haematology; Imperial College and Hammersmith Hospital; London UK