About the Authors

Chinelo C. Okigbo

Contributed equally to this work with: Chinelo C. Okigbo, Ilene S. Speizer

cokigbo@live.unc.edu

Affiliations Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America, Measurement, Learning, and Evaluation Project, Carolina Population Center, University of North Carolina, Chapel Hill, North Carolina, United States of America

Ilene S. Speizer

Contributed equally to this work with: Chinelo C. Okigbo, Ilene S. Speizer

Affiliations Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America, Measurement, Learning, and Evaluation Project, Carolina Population Center, University of North Carolina, Chapel Hill, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CCO ISS. Performed the experiments: CCO ISS. Analyzed the data: CCO ISS. Contributed reagents/materials/analysis tools: CCO ISS. Wrote the paper: CCO ISS.