1. Institute of Health and Society, Newcastle University, Sir James Spence Institute, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK
2. Fuse—UKCRC Centre for Translational Research in Public Health, Newcastle Upon Tyne, UK
3. Department of Sociology, Durham University, 29 Old Elvet, Durham, UK
4. Division of Health Research, Faculty of Health & Medicine, Lancaster University, Furness Building, Bailrigg, Lancaster, UK