1. Department of Anaesthesia and Intensive Care Medicine; Royal United Hospital; Bath UK
2. Department of Psychology; School of Psychology and Cognition Institute; Plymouth University; Plymouth UK
3. Nottingham University Hospitals NHS Trust; Nottingham UK
4. Royal College of Anaesthetists; London UK
5. Department of Anaesthesia, Intensive Care and Pain Medicine; Sligo Regional Hospital; Sligo Ireland
6. Northwick Park Hospital; Harrow Middlesex UK
7. Papworth Hospital; Cambridge UK
8. Department of Anaesthesia; Royal Infirmary of Edinburgh; Edinburgh UK
9. Bristol School of Anaesthesia; Bristol UK
10. St James Hospital; Dublin Ireland
11. Adult Intensive Care Unit; Royal Brompton Hospital; London UK
12. Salford Royal Hospital; Salford UK
13. Department of Anaesthesia; Imperial College NHS Trust; London UK
14. Department of Neuroanaesthesia; National Hospital for Neurology and Neurosurgery; University College Hospitals London Trust; London UK
15. Department of Anaesthesia; Great Ormond Street Hospital NHS Foundation Trust; London UK
16. Bradford Teaching Hospitals NHS Foundation Trust; Bradford UK
17. Department of Clinical Psychology; University of Leicester; Leicester UK
18. Leicestershire Partnership NHS Trust; London UK
19. Nuffield Department of Anaesthesia; Oxford University Hospitals NHS Trust; Oxford UK