1. Centre for Child and Adolescent Mental Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
2. Department of Psychiatry, University of Cambridge, Cambridge, UK
3. Department of Psychiatry, Komfo Anokye Teaching Hospital, Kumasi, Ghana
4. Centre for Social Science Research, University of Cape Town, Cape Town, South Africa
5. Department of Social Policy and Intervention, Oxford University, Oxford, UK
6. Department of Statistics, Oxford University, Oxford, UK