About the Authors

Jennifer A. Slyker

jslyker@uw.edu

Affiliation Department of Global Health, University of Washington, Seattle, Washington, United States of America

Michael H. Chung

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Epidemiology, University of Washington, Seattle, Washington, United States of America

Dara A. Lehman

Affiliation Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

James Kiarie

Affiliation Department of Obstetrics and Gynaecology, University of Nairobi, Nairobi, Kenya

John Kinuthia

Affiliation Department of Obstetrics and Gynaecology, Kenyatta National Hospital, Nairobi, Kenya

Sarah Holte

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Biostatistics, University of Washington, Seattle, Washington, United States of America

Kenneth Tapia

Affiliation Department of Global Health, University of Washington, Seattle, Washington, United States of America

Francis Njiri

Affiliation Department of Obstetrics and Gynaecology, University of Nairobi, Nairobi, Kenya

Julie Overbaugh

Affiliation Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Grace John-Stewart

Affiliations Department of Global Health, University of Washington, Seattle, Washington, United States of America, Department of Medicine, University of Washington, Seattle, Washington, United States of America, Department of Epidemiology, University of Washington, Seattle, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GJ-S MC JS. Performed the experiments: DL. Analyzed the data: JS KT SH FN. Contributed reagents/materials/analysis tools: JO GJ-S J. Kiarie J. Kinuthia. Wrote the paper: JS GJ-S MC.