About the Authors

Zhixia Zhang

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, P.R. China

Xingxin Zhan

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, P.R. China

Yingxue Li

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, P.R. China

Rong Hu

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, P.R. China

Weirong Yan

weirongy@gmail.com

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, P.R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WRY. Performed the experiments: ZXZ XXZ. Analyzed the data: ZXZ XXZ. Contributed reagents/materials/analysis tools: WRY YXL RH. Wrote the paper: ZXZ. Revised critically important intellectual content: WRY.