1. Health Systems Research Unit; South African Medical Research Council; Cape Town South Africa
2. Independent researcher; Cape Town South Africa
3. Alcohol Tobacco and Other Drug Research Unit; The South African Medical Research Council; Cape Town South Africa
4. Cochrane South Africa; South African Medical Research Council; Cape Town South Africa
5. Department of Global Health, Faculty of Medicine and Health Sciences; Stellenbosch University; Stellenbosch South Africa
6. Social & Behavioural Sciences Division, School of Public Health; University of Cape Town; Cape Town South Africa
7. HIV and Other Infectious Diseases Research Unit; South African Medical Research Council; Cape Town South Africa
8. Department of Psychiatry; Stellenbosch University; Cape Town South Africa
9. Center for Microbiology Research; Kenya Medical Research Institute; Nairobi Kenya
10. Department of Global Health; University of Washington; Seattle Washington USA
11. Department of Epidemiology, School of Public Health; Brown University; Providence Rhode Island USA