1. Warwick Medical School, University of Warwick , Coventry CV4 7AL, UK
2. Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
3. Warwick Business School, University of Warwick , Coventry CV4 7AL, UK
4. Population Health Sciences Institute, Newcastle University , Newcastle upon Tyne NE1 7RU, UK
5. Institute of Applied Social Research, Tilda Goldberg Centre, University of Bedfordshire , Luton LU1 3JU, UK
6. Department of Criminology, Sociology, and Social Policy, Loughborough University , Loughborough LE11 3TU, UK
7. Population Health Sciences Institute, Newcastle University Faculty of Medical Sciences , Newcastle upon Tyne NE2 4AX, UK
8. Population, Policy & Practice Department, UCL GOS Institute of Child Health, University College London , London WC1N 1EH, UK