About the Authors

Yan Huang

Contributed equally to this work with: Yan Huang, Wen Tang, Yi Mu

Affiliation Nursing Department, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China

Wen Tang

Contributed equally to this work with: Yan Huang, Wen Tang, Yi Mu

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

Yi Mu

Contributed equally to this work with: Yan Huang, Wen Tang, Yi Mu

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

Xiaohong Li

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

Zheng Liu

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

Yanping Wang

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

Mingrong Li

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

Qi Li

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

Li Dai

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

Juan Liang

zhujun028@163.com (JZ); liangjuan028@163.com (JL)

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

Jun Zhu

zhujun028@163.com (JZ); liangjuan028@163.com (JL)

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: JL JZ. Data curation: WT YM JL JZ. Formal analysis: YH WT YM. Funding acquisition: JZ. Methodology: WT YM. Project administration: JZ. Resources: WT YM XL ZL YW ML QL LD JL JZ. Software: WT YM. Supervision: JL JZ. Validation: YH WT YM JL JZ. Writing – original draft: YH WT YM JL. Writing – review & editing: YH WT YM XL ZL YW ML QL LD JL JZ.