About the Authors
South African Cochrane Centre, Medical Research Council of South Africa, Cape Town, South Africa
Primary Health Care Directorate, University of Cape Town, Cape Town, South Africa
Health Systems Research Unit, Medical Research Council of South Africa, Cape Town, South Africa
Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
International Health Group, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
Department of Medicine, University of Cape Town, Cape Town, South Africa
Norwegian Knowledge Centre for the Health Services, Oslo, Norway
University of Stellenbosch, Faculty of Health Sciences, Cape Town, South Africa
The authors have declared that no competing interests exist.
SAM, SAL, MEE, AF, and JV developed the protocol and conceptualised the study. All authors participated in data extraction, quality assessment tool development, quality assessment and in retrieving the studies. SAM, SAL, and HJS analysed the data, with later analysis supported by all authors. SAM wrote the initial draft; SAM, SAL, and HJS edited the manuscript; and all authors contributed to the final draft.