About the Authors

Meng Shi

Affiliation English Department, School of Basic Medicine, China Medical University, Shenyang, People’s Republic of China

Li Liu

Affiliation Department of Social Medicine, School of Public Health, China Medical University, Shenyang, People’s Republic of China

Zi Yue Wang

Affiliation Department of Social Medicine, School of Public Health, China Medical University, Shenyang, People’s Republic of China

Lie Wang

liewang@mail.cmu.edu.cn

Affiliation Department of Social Medicine, School of Public Health, China Medical University, Shenyang, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LW MS. Analyzed the data: LL ZYW MS. Wrote the paper: MS LW ZYW LL.