About the Authors

Fuhai Shen

Affiliations School of Public Health, China Medical University, Shenyang, Liaoning, P.R. China, School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Juxiang Yuan

Affiliation School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Zhiqian Sun

Affiliation School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Zhengbing Hua

Affiliation School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Tianbang Qin

Affiliation Occupational Disease Prevention and Treatment Hospital of Kailuan Colliery Group, Tangshan, Hebei, P.R. China

Sanqiao Yao

Affiliation School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Xueyun Fan

Affiliation School of Public Health, Hebei United University, Tangshan, Hebei, P.R. China

Weihong Chen

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

Hongbo Liu

Affiliation School of Public Health, China Medical University, Shenyang, Liaoning, P.R. China

Jie Chen

chenjie@mail.cmu.edu.cn

Affiliation School of Public Health, China Medical University, Shenyang, Liaoning, P.R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FS HL JC. Performed the experiments: FS JY ZS ZH TQ XF. Analyzed the data: FS JY ZS ZH SY WC HL JC. Contributed reagents/materials/analysis tools: FS ZS ZH HL JC. Wrote the paper: FS HL JC.