1 Anova Health Institute, Johannesburg, South Africa; Division of Community Paediatrics, Department of Paediatrics and Child Health, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
2 Anova Health Institute, Johannesburg, South Africa.
3 Anova Health Institute, Johannesburg, South Africa; Global Change Institute, University of the Witwatersrand, Johannesburg, South Africa; Graduate School of Technology Management, University of Pretoria, South Africa.
4 Anova Health Institute, Johannesburg, South Africa; Department of Sociology, University of the Witwatersrand, Johannesburg, South Africa.
5 SIOC Community Development Trust, Kathu, South Africa.
6 Anova Health Institute, Johannesburg, South Africa; Department of Community Health, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.