About the Authors

Eleanor Brindle

Contributed equally to this work with: Eleanor Brindle, Daniel Stevens

ebrindle@uw.edu

Affiliation Center for Studies in Demography and Ecology, University of Washington, 218D Raitt Hall, Box 353412, Seattle, Washington, United States of America

Daniel Stevens

Contributed equally to this work with: Eleanor Brindle, Daniel Stevens

Affiliation PATH, 2201 Westlake Avenue, Suite 200, Seattle, Washington, United States of America

Christopher Crudder

Affiliation PATH, 2201 Westlake Avenue, Suite 200, Seattle, Washington, United States of America

Carol E. Levin

Affiliation Disease Control Priorities Network, University of Washington, 325 Ninth Avenue, Box 359931, Seattle, Washington, United States of America

Dean Garrett

Affiliations PATH, 2201 Westlake Avenue, Suite 200, Seattle, Washington, United States of America, ICF International, 530 Gaither Road, Suite 500, Rockville, Maryland 20850, United States of America

Chris Lyman

Affiliation Quansys Biosciences, 365 N. 600 W, Logan, Utah 84321, United States of America

David S. Boyle

Affiliation PATH, 2201 Westlake Avenue, Suite 200, Seattle, Washington, United States of America

Competing Interests

Regarding the author employed by ICF International, that author, and in fact that company, have no interest, financial or otherwise, relating to the assay described in this manuscript. ICF International is contracted by the US Agency for International Development (USAID) to implement the Demographic and Health Surveys, and they are thus potential users of assays like the one described here. Dean Garrett is the author affiliated with ICF International as a subcontractor (employed by PATH) who has extensive expertise in implementing large-scale nutrition assessment surveys. This affiliation and the affiliation of the author Chris Lyman are noted here for the purposes of transparency, and have had no influence on the content of our manuscript. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: EB DS CC CEL DG CL DSB. Performed the experiments: EB DS CL. Analyzed the data: EB DS CC CL DSB. Contributed reagents/materials/analysis tools: CL DSB. Wrote the paper: EB CC DSB.