1. Gender and Health Research Unit, South African Medical Research Council, Pretoria, Gauteng, South Africa
2. School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
3. Office of the Executive Scientist, South African Medical Research Council, Pretoria, Gauteng, South Africa
4. School of Public Health, University of Ghana, Accra, Ghana
5. School of Public Health and Health Systems, University of the Pretoria, Pretoria, Gauteng, South Africa
6. Department of Psychology, University of Exeter, Exeter, Devon, UK