1. Institute for Social Marketing and Health, Faculty of Health Sciences and Sport, University of Stirling, Stirling, UK
2. School of Health Sciences, University of Dundee, Dundee, UK
3. School of Social and Political Science, The University of Edinburgh, Edinburgh, UK
4. School of Health and Related Research, University of Sheffield, Sheffield, UK
5. Department of Public Health, Environments and Society, London School of Hygiene and Tropical Medicine, London, UK
6. SPECTRUM Consortium, Edinburgh, UK