About the Authors

Nothemba Kula, Robert Fryatt
UK Department for International Development (DFID) - Southern Africa, Pretoria, South Africa

Andy Haines
Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

Corresponding Author

b-fryatt@dfid.gov.uk

Competing Interests

RF is an adviser for DFID. The authors have declared that no other competing interests exist.

Author Contributions

Analyzed the data: NK AH RF. Wrote the first draft of the manuscript: NK. Contributed to the writing of the manuscript: NK AH RF. ICMJE criteria for authorship read and met: NK AH RF. Agree with manuscript results and conclusions: NK AH RF.