1. Therapies Department, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
2. Population Health Research Institute, St George’s University of London, UK
3. School of Health and Social Care, London South Bank University, London, UK
4. Department of Clinical Health Psychology, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
5. Department of Psychology, Staffordshire University, Stoke-on-Trent, UK
6. Pain Clinic, Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
7. Department of Psychology, City University of London, UK