1. Department of Anaesthesia and Intensive Care; Papworth Hospital; Cambridge UK
2. Department of Paediatric Anaesthesia; Alder Hey Children's Hospital; University of Liverpool; Liverpool UK
3. Department of Paediatric Anaesthesia; Great Ormond Street Hospital for Children; London UK
4. Centre for Trauma Sciences; Barts Health NHS Trust and Queen Mary University of London; London UK
5. Department of Anaesthesia; Glasgow Royal Infirmary; Glasgow UK
6. Department of Anaesthesia; University Hospital of Wales; Cardiff UK
7. Department of Anaesthesia; University Hospital Southampton; UK
8. The Royal Marsden Hospital; London UK
9. Department of Anaesthesia; Derriford Hospital; Plymouth UK
10. Department of Anaesthesia; The Royal Marsden Hospital; London UK
11. Division of Surgery and Interventional Science; University College Hospital; London UK
12. Department of Anaesthesia; Southmead Hospital; Bristol UK
13. Department of Haematology; Oxford Radcliffe Hospitals; Oxford UK
14. Department of Anaesthetics, Critical Care and Pain Medicine; Edinburgh University; Edinburgh UK