About the Authors

Lu Zhang

Affiliation Epidemiology Program, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America

Zhenzhen Zhang

Affiliation Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, Michigan, United States of America

Yurong Zhang

Affiliation The First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shanxi, China

Gang Hu

Affiliation Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States of America

Liwei Chen

liweic@clemson.edu

Affiliation Department of Public Health Sciences, Clemson University, Clemson, South Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LC LZ ZZ YZ GH. Performed the experiments: LZ LC. Analyzed the data: LC LZ. Wrote the paper: LC LZ ZZ. Revised the manuscript: LC LZ ZZ GH YZ.