1. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
2. Institute of Applied Health Research, University of Birmingham, Birmingham, UK
3. Faculty of Philosophy, University of Oxford, Oxford, UK
4. Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland
5. Department of Psychiatry and Applied Psychology, University of Nottingham, Nottingham, UK
6. Institute of Mental Health, Nottinghamshire Healthcare NHS Foundation Trust, Nottingham, UK
7. Division of Psychiatry, University College London, London, UK
8. Department for Health, University of Bath, Bath, UK
9. Public and patient representative, Oxford, UK
10. Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA
11. College of Medicine and Health, University of Exeter, Exeter, UK