About the Authors

Caifa Ji

Roles Data curation, Formal analysis, Software, Writing – original draft

Affiliation School of Public Health, Hainan Medical University, Haikou, Hainan, China

Youjian Yao

Roles Data curation, Methodology, Software

Affiliation School of Public Health, Hainan Medical University, Haikou, Hainan, China

Mei Gui

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Supervision, Writing – review & editing

guimei0812@126.com

Affiliation School of Public Health, Hainan Medical University, Haikou, Hainan, China

Competing Interests

The authors have declared that no competing interests exist.