1. Brighton & Sussex University Hospitals NHS Trust, Brighton, UK
2. Royal London Hospital, Barts Health NHS Trust, London, UK
3. Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, Oxford, UK
4. Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
5. Royal Devon & Exeter NHS Foundation Trust, London, UK
6. NMC Spine, Dubai, United Arab Emirates