1. School of Health and Related Research University of Sheffield Sheffield UK
2. Addiction Department AULSS 6 Euganea Padova Italy
3. Faculty of Health Social Care & Medicine Edge Hill University Ormskirk UK
4. School of Humanities and Social Science University of Newcastle Newcastle New South Wales Australia
5. MRC/CSO Social and Public Health Sciences Unit University of Glasgow Glasgow UK
6. School of Human and Health Science University of Huddersfield Huddersfield UK