| Affiliation: | 1. Liverpool Reviews and Implementation Group, Department of Health Services Research, University of Liverpool, Liverpool, U.K;2. Health Economics Unit, Institute of Applied Health Research, University of Birmingham, Birmingham, U.K;3. Faculty of Health, Birmingham City University, Birmingham, U.K;4. Department of Pain Management, Russells Hall Hospital, Dudley, U.K;5. Department of Pain and Anaesthesia, The James Cook University Hospital, Middlesbrough, U.K;6. Populations, Evidence and Technologies Group, Division of Health Sciences, University of Warwick, Coventry, U.K |
