About the Authors

Chao Tan

Contributed equally to this work with: Chao Tan, Shun Liu, Shengkui Tan

Affiliation Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China

Shun Liu

Contributed equally to this work with: Chao Tan, Shun Liu, Shengkui Tan

Affiliation Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China

Shengkui Tan

Contributed equally to this work with: Chao Tan, Shun Liu, Shengkui Tan

Affiliation Department of Epidemiology, School of Public Health, Guilin Medical University, Guilin, Guangxi, China

Xiaoyun Zeng

Affiliation Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China

Hongping Yu

Affiliation Department of Epidemiology, School of Public Health, Guilin Medical University, Guilin, Guangxi, China

Anhua Li

Affiliation Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China

Chunhua Bei

Affiliation Department of Epidemiology, School of Public Health, Guilin Medical University, Guilin, Guangxi, China

Xiaoqiang Qiu

xqqiu9999@sina.com

Affiliation Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CT ST XQ. Performed the experiments: CT AL. Analyzed the data: CT. Contributed reagents/materials/analysis tools: HY CB XQ. Wrote the paper: CT SL XZ.