About the Authors

Tongtong Li

Roles Data curation, Formal analysis, Investigation, Methodology, Writing – original draft

Affiliation School of Public Health, Peking University, Haidian District, Beijing, P.R.China

Qi Wang

Roles Data curation, Investigation, Project administration

Affiliation School of Public Health, Peking University, Haidian District, Beijing, P.R.China

Zheng Xie

Roles Conceptualization, Funding acquisition, Resources, Supervision, Validation, Visualization, Writing – review & editing

xiezheng@bjmu.edu.cn

Affiliation School of Public Health, Peking University, Haidian District, Beijing, P.R.China

Competing Interests

The authors have declared that no competing interests exist.