1. Department of Social Policy and Intervention, University of Oxford, Oxford, UK
2. Institute for Global Health, University College London, London, UK
3. Centre for Social Science Research, University of Cape Town, Rondebosch, South Africa
4. Department of Sociology, University of Cape Town, Rondebosch, South Africa
5. Department of Psychiatry and Mental Health, University of Cape Town, Rondebosch, South Africa
6. Norwegian Institute for Public Health, Oslo, Norway
7. London School of Hygiene and Tropical Medicine, London, UK
8. Wolfson Centre for Young People’s Mental Health, Cardiff University, Cardiff, UK
9. Centre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), Cardiff University, Cardiff, UK