Tingting Xu1,2, Fan Zhou1,2, Zhiyi Zhou1,2, Na Liu1,2, Danni Liu1,2, Chunyan Deng1,2, Guiqiong Huang1,2, Xiaodong Wang1,2
(1. Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China, 2. Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China)