About the Authors

Claudio F. Lanata

clanata@iin.sld.pe

Affiliations Instituto de Investigacion Nutricional, Lima, Peru, US Navy Medical Research Unit 6, Callao, Peru, School of Medicine, Universidad Peruana de Ciencias Aplicadas, Lima, Peru

Christa L. Fischer-Walker

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

Ana C. Olascoaga

Affiliation Instituto de Investigacion Nutricional, Lima, Peru

Carla X. Torres

Affiliation Instituto de Investigacion Nutricional, Lima, Peru

Martin J. Aryee

Affiliation Division of Biostatistics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, Maryland, United States of America

Robert E. Black

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

for the Child Health Epidemiology Reference Group of the World Health Organization and UNICEF

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CFL CLF REB. Performed the experiments: CFL ACO CXT CLF REB. Analyzed the data: CFL CLF MJA. Contributed reagents/materials/analysis tools: MJA. Wrote the paper: CFL CLF MJA REB.