1. Division of Health systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
2. Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
3. Save the Children International, Somalia/Somaliland Country Office, Nairobi, Kenya
4. Independent consultant, Pretoria, South Africa
5. Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
6. Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa