About the Authors

Youngji Jo

Affiliations Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America, Johns Hopkins University Global mHealth Initiative, Baltimore, Maryland, United States of America

Alain B. Labrique

alabriqu@gmail.com

Affiliations Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America, Johns Hopkins University Global mHealth Initiative, Baltimore, Maryland, United States of America

Amnesty E. Lefevre

Affiliations Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America, Johns Hopkins University Global mHealth Initiative, Baltimore, Maryland, United States of America

Garrett Mehl

Affiliation World Health Organization, Department of Reproductive Health and Research, Geneva, Switzerland

Teresa Pfaff

Affiliations Johns Hopkins University Global mHealth Initiative, Baltimore, Maryland, United States of America, Department of Community Public Health, Johns Hopkins School of Nursing, Baltimore, Maryland, United States of America

Neff Walker

Affiliation Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Ingrid K. Friberg

Affiliation Department of International Health, 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: ABL YJJ AEL IKF. Performed the experiments: YJJ. Analyzed the data: YJJ IKF. Contributed reagents/materials/analysis tools: ABL NW GM. Wrote the paper: YJJ ABL IKF AEL TP GM.