Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, No. 20, 3rd Section, South Renmin Road, Chengdu, 610041, Sichuan, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Sichuan, 610041, China
Ai Zheng
Corresponding author. Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Sichuan, China.; Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, No. 20, 3rd Section, South Renmin Road, Chengdu, 610041, Sichuan, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Sichuan, 610041, China
