1. Orthopaedics Department, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK; School of Pharmacy and Bioengineering, Keele University, Staffordshire, UK
2. Birmingham Clinical Trials Unit, Birmingham University, Midlands, UK
3. Orthopaedics Department, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK
4. Nuffield Department of Population Health, Oxford University, Oxfordshire, UK
5. School of Pharmacy and Bioengineering, Keele University, Staffordshire, UK
6. Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry
7. County Hospital, Stafford, University Hospitals of North Midlands NHS Trust, Stoke
8. Wrightington Wigan and Leigh teaching hospitals NHSFT, Wigan
9. Royal Orthopaedic Hospital Birmingham, Birmingham
10. Edith Cavell Hospital Peterborough [now Peterborough City Hospital], NW Anglia NHSFT, Peterborough
11. Royal Alexandra Hospital, Paisley; NHS Greater Glasgow and Clyde, Paisley
12. Friarage Hospital, South Tees; South Tees Hospitals NHSFT, Northallerton
13. The James Cook University Hospital, Middlesborough; South Tees Hospitals NHSFT, Middlesborough
14. St Olavs Hospital, Tondheim
15. University Hospital of North Norway Tromso, Tromso
16. Warrington and Halton Hospitals NHS Trust, Warrington
17. Ipswich Hospital, East Suffolk and North Essex NHSFT, Ipswich
18. Stepping Hill Hospital, Stockport NHSFT, Stockport
19. New Cross Hospital, Royal Wolverhampton NHS Trust, Wolverhampton
20. York Hospital, York and Scarborough Teaching Hospitals NHSFT, York
21. Russels Hall Hospital, The Dudley Group NHSFT, Dudley
22. Worthing Hospital, University Hospitals Sussex NHSFT, Worthing
23. Frimley Park Hospital, Frimley Health NHSFT, Frimley Park
24. The Great Western Hospitals NHSFT, Swindon
25. Weston General Hospital, Weston Area Health NHS Trust, Weston-Super-Mare
26. Hillingdon Hospital, The Hillingdon Hospitals NHSFT, Hillingdon
27. St Mary’s Hospital, Imperial College Healthcare NHS Trust, Paddington
28. North Manchester General Hospital, Manchester University NHSFT, Manchester
29. Fairfield General Hospital, Northern Care Alliance NHSFT, Bury
30. The Royal National Orthopaedic Hospital Stanmore, Stanmore
31. Nuffield Orthopaedic Centre, Oxford University Hospitals NHSFT, Oxford
32. Royal Devon & Exeter Hospital, Wonford
33. Royal Devon & Exeter Hospital, Wonford, Exeter
34. Sunderland Royal Hospital, South Tyneside and Sunderland NHSFT, Sunderland
35. Investigation performed at the Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK