About the Authors

Junhao Sun

Roles Conceptualization, Data curation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Department of Epidemiology and Health Statistics, The School of Public Health of Qingdao University, Qingdao, China

Siqi Yang

Roles Data curation, Software, Writing – review & editing

Affiliation Department of Epidemiology and Health Statistics, The School of Public Health of Qingdao University, Qingdao, China

Yue Zhang

Roles Software, Validation, Writing – review & editing

Affiliation Qingdao Maternal & Child Health and Family Planning Service Center, Qingdao, China

Wenzhi Xiang

Roles Data curation, Validation, Writing – review & editing

Affiliation Huangdao District Center for Disease Control and Prevention, Qingdao, China

Xiubo Jiang

Roles Conceptualization, Methodology, Writing – review & editing

jiangxiubo2005@126.com

Affiliation Department of Epidemiology and Health Statistics, The School of Public Health of Qingdao University, Qingdao, China

Competing Interests

The authors have declared that no competing interests exist.