About the Authors

Xiao Fu

fuxiao@indiana.edu

Affiliations The Biocomplexity Institute, Indiana University, Bloomington, Indiana, United States of America, Department of Physics, Indiana University, Bloomington, Indiana, United States of America

John Scott Gens

Affiliations The Biocomplexity Institute, Indiana University, Bloomington, Indiana, United States of America, Department of Physics, Indiana University, Bloomington, Indiana, United States of America

James A. Glazier

Affiliations The Biocomplexity Institute, Indiana University, Bloomington, Indiana, United States of America, Department of Physics, Indiana University, Bloomington, Indiana, United States of America, Department of Intelligent Systems Engineering, Indiana University, Bloomington, Indiana, United States of America

Stephen A. Burns

Affiliation School of Optometry, Indiana University, Bloomington, Indiana, United States of America

Thomas J. Gast

Affiliation School of Optometry, Indiana University, Bloomington, Indiana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XF JSG JAG SAB TJG. Performed the experiments: XF SAB TJG. Analyzed the data: XF JAG TJG. Wrote the paper: XF JSG JAG SAB TJG.