About the Authors

Takele Lakew, Wondu Alemayehu, Muluken Melese
Orbis International, Addis Ababa, Ethiopia

Elizabeth Yi, Jenafir I. House, Kevin C. Hong, Zhaoxia Zhou, Kathryn J. Ray, Travis C. Porco, Bruce D. Gaynor, Thomas M. Lietman, Jeremy D. Keenan
F. I. Proctor Foundation, University of California, San Francisco, California, United States of America

Bruce D. Gaynor, Thomas M. Lietman, Jeremy D. Keenan
Department of Ophthalmology, University of California, San Francisco, California, United States of America

Thomas M. Lietman
Department of Epidemiology & Biostatistics, University of California, San Francisco, California, United States of America

Thomas M. Lietman
Institute for Global Health, University of California, San Francisco, California, United States of America

Corresponding Author

jeremy.keenan@ucsf.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TML. Performed the experiments: TL WA MM EY JIH KCH BDG TML. Analyzed the data: ZZ KJR TCP TML JDK. Contributed reagents/materials/analysis tools: ZZ. Wrote the paper: TML JDK.