1. Institute for Life Course Health Research, Department of Global Health, Stellenbosch University, Cape Town, South Africa
2. Department for Social Policy and Intervention, University of Oxford, Oxford, UK
3. Faculty of Social and Behavioural Sciences, Amsterdam Institute for Social Science Research, University of Amsterdam, Amsterdam, Netherlands
4. Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
5. Institute for Global Health, University College London, London, UK
6. School of Nursing and Midwifery, Queens University, Belfast, UK