About the Authors

Katherine Doolan

Affiliations School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa, Center for International Data Evaluation and Analysis, Women's Global Health Imperative, University of California at San Francisco, San Francisco, California, United States of America

Rodney Ehrlich

Affiliations School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

Landon Myer

To whom correspondence should be addressed. E-mail: landon.myer@uct.ac.za

Affiliations School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KD. Analyzed the data: KD. Contributed reagents/materials/analysis tools: LM. Wrote the paper: LM RE KD.