1. Leeds Pain and Neuromodulation Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
2. School of Medicine, Faculty of Medicine and Health, University of Leeds, Leeds, UK
3. School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK
4. Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
5. Pain and Anaesthesia Research Centre, St Bartholomew’s Hospital, London, UK
6. Department of Anaesthesiology, Basildon and Thurrock University Hospitals, Basildon, UK
7. Department of Pain Medicine, The Walton Centre NHS Foundation Trust, Liverpool, UK
8. Wessex Neurological Centre, University Hospital Southampton, Southampton, UK
9. Department of Neurosurgery, The John Radcliffe Hospital, Oxford, UK
10. Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK