1. Centre for Development Support, University of the Free State, Bloemfontein, South Africa
2. Research on Health and Society Unit, Stellenboach University, Cape Town, South Africa
3. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
4. Social Aspects of Public Health, Human Sciences Research Council, Cape Town, South Africa
5. School of Clinical Medicine, University of the Free State, Bloemfontein, South Africa