1. Department of Psychiatry, University of Oxford, Oxford, UK
2. MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
3. Department of Psychiatry, University of Stellenbosch, Cape Town, South Africa
4. Centre for the Study of African Economies, Blavatnik School of Government, University of Oxford, Oxford, UK
5. Nuffield Department of Primary Care Clinical Trials Unit, University of Oxford, Oxford, UK
6. Exploristics, Belfast, UK
7. Odeion School of Music, University of the Free State, Bloemfontein, South Africa
8. School of Arts: Music, University of Pretoria, Tshwane, South Africa
9. Centre for Global Health Research, Umeå University, Umeå, Sweden
10. Department of Experimental Psychology, University of Oxford, Oxford, UK
11. Africa Health Research Institute, KwaZulu Natal, South Africa