About the Authors

Themba Mzilahowa

Affiliations Liverpool School of Tropical Medicine, Liverpool, United Kingdom, Malawi-Liverpool Wellcome Trust Clinical Research Programme, Blantyre, Malawi

Philip J. McCall

Affiliation Liverpool School of Tropical Medicine, Liverpool, United Kingdom

Ian M. Hastings

To whom correspondence should be addressed. E-mail: hastings@liverpool.ac.uk

Affiliation Liverpool School of Tropical Medicine, Liverpool, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IH PM TM. Performed the experiments: PM TM. Analyzed the data: IH TM. Wrote the paper: IH TM.