1. Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
2. Centre for Reviews and Dissemination, University of York, York, UK
3. Liverpool Reviews and Implementation Group, University of Liverpool, Liverpool, UK
4. Pain Medicine and Neuromodulation, Mid & South Essex University Hospitals, Essex, UK
5. Leeds Neuromodulation Centre, Leeds Teaching Hospitals, Leeds, UK
6. Health Economics, QC Medica, Liverpool, UK
7. Patient and Public Involvement Representatives, Middlesbrough, UK
8. MRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being, University of Glasgow, Glasgow, UK
9. Saluda Medical Pty Ltd, Artarmon, New South Wales, Australia