About the Authors

Christine Njuguna

christine_njuguna@yahoo.co.uk

Affiliation Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

Catherine Orrell

Affiliation Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

Richard Kaplan

Affiliation Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

Linda-Gail Bekker

Affiliation Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

Robin Wood

Affiliation Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

Stephen D. Lawn

Affiliations Desmond Tutu HIV Centre, Institute for Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa, Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CN SDL CO RK. Analyzed the data: CN. Wrote the paper: CN CO RK LGB RW SDL. Maintained the electronic databases used in the study: RK.