About the Authors

Sandra I. McCoy

smccoy@berkeley.edu

Affiliation University of California, Berkeley, California, United States of America

Raluca Buzdugan

Affiliation University of California, Berkeley, California, United States of America

Lauren J. Ralph

Affiliation University of California, Berkeley, California, United States of America

Angela Mushavi

Affiliation Ministry of Health and Child Care, Harare, Zimbabwe

Agnes Mahomva

Affiliation Elizabeth Glaser Pediatric AIDS Foundation, Harare, Zimbabwe

Anna Hakobyan

Affiliation Children’s Investment Fund Foundation, London, United Kingdom

Constancia Watadzaushe

Affiliation Centre for Sexual Health and HIV Research, Harare, Zimbabwe

Jeffrey Dirawo

Affiliation Centre for Sexual Health and HIV Research, Harare, Zimbabwe

Frances M. Cowan

Affiliations Centre for Sexual Health and HIV Research, Harare, Zimbabwe, University College London, London, United Kingdom

Nancy S. Padian

Affiliation University of California, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM RB LR FC NP AH. Performed the experiments: SM RB LR CW JD. Analyzed the data: SM RB JD. Contributed to the writing of the manuscript: SM RB LR A. Mahomva A. Mushavi CW JD FC NP AH. Designed the parent impact evaluation: SM NP FC A. Mahomva AH. Collected data: JD CW RB.