1. Department of Nursing and Midwifery, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
2. Independent Consultant, Pretoria, South Africa
3. Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa
4. School of Health Systems and Public Health, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
5. Department of Public Health, Michael Chilifa Sata School of Medicine, Copperbelt University, Kitwe, Zambia
6. School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
7. Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa