About the Authors

Mercy Manyema

Mercy.Manyema@wits.ac.za

Affiliations School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, PRICELESS-SA, MRC/Wits Rural Public, Health and Health Transitions Research Unit, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa

Lennert J. Veerman

Affiliation School of Population Health, University of Queensland, Brisbane, Queensland, Australia

Lumbwe Chola

Affiliations School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, PRICELESS-SA, MRC/Wits Rural Public, Health and Health Transitions Research Unit, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa

Aviva Tugendhaft

Affiliations School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, PRICELESS-SA, MRC/Wits Rural Public, Health and Health Transitions Research Unit, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa

Benn Sartorius

Affiliations School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, Discipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa

Demetre Labadarios

Affiliation Population Health, Health Systems and Innovation (PHHSI), Human Sciences Research Council, Capetown, South Africa

Karen J. Hofman

Affiliations School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, PRICELESS-SA, MRC/Wits Rural Public, Health and Health Transitions Research Unit, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LJV BS KJH. Performed the experiments: MM LJV AT BS DL. Analyzed the data: MM LJV LC AT BS DL. Contributed reagents/materials/analysis tools: MM LJV LC AT BS DL KJH. Contributed to the writing of the manuscript: MM LJV LC AT BS DL KJH.