1. Great Western Hospital NHS FT, Swindon, UK
2. 1st Orthopaedic Department, George Papanikolaou Hospital, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Inverclyde Royal Hospital, Greater Glasgow and Clyde NHS FT, Inverclyde, UK
4. University Hospitals Coventry and Warwickshire, Coventry, UK
5. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK