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


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.