1. Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
2. Leeds Teaching Hospitals NHS Trust, Leeds, UK
3. School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
4. NHS Highland, Inverness, UK
5. University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
6. Oxford University Hospitals NHS Trust, Oxford, UK
7. Aintree University Hospital NHS Foundation Trust, Liverpool, UK
8. North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, UK
9. Barts Health NHS Trust, London, UK
10. Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
11. Northern Devon Healthcare NHS Trust, Devon, UK
12. Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
13. North West London Hospitals NHS Trust, London, UK
14. University Hospital Southampton NHS Foundation Trust, Southampton, UK
15. Poole Hospital NHS Foundation Trust, Poole, UK
16. NHS Lanarkshire, Airdrie, UK
17. Royal Berkshire NHS Foundation Trust, Reading, UK
18. Imperial College Healthcare NHS Trust, London, UK
19. Peterborough and Stamford Hospitals NHS Foundation Trust, Peterborough, UK