About the Authors

Peiran Chen

Contributed equally to this work with: Peiran Chen, Yi Mu

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Yi Mu

Contributed equally to this work with: Peiran Chen, Yi Mu

Roles Formal analysis, Methodology, Writing – original draft

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Yanxia Xie

Roles Methodology, Writing – original draft

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Yanping Wang

Roles Writing – review & editing

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Zheng Liu

Roles Writing – review & editing

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Mingrong Li

Roles Data curation

Affiliation National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Juan Liang

Roles Conceptualization, Methodology, Writing – review & editing

liangjuan@scu.edu.cn (JL); zhujun028@163.com (JZ)

Affiliations National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Jun Zhu

Roles Conceptualization, Supervision, Writing – review & editing

liangjuan@scu.edu.cn (JL); zhujun028@163.com (JZ)

Affiliations National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China

Competing Interests

The authors have declared that no competing interests exist.