1. College of Medicine and Health, University of Exeter, Exeter, UK
2. Wellcome Centre for Cultures and Environments of Health, University of Exeter, Exeter, UK
3. Wolfson Palliative Care Research Centre, Hull York Medical School, Faculty of Health Sciences, University of Hull, Hull, UK
4. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
5. Exeter HSDR Evidence Synthesis Centre, Institute of Health Research, College of Medicine and Health, University of Exeter, Exeter, UK