1 Department of Gynecology, Chengdu First People's Hospital, Chengdu, 610000, Sichuan Province, China.
2 Department of Gynecology, Chengdu First People's Hospital, Chengdu, 610000, Sichuan Province, China. Electronic address: 741576339@qq.com.
3 West China Second University Hospital, Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan Province, China. Electronic address: zisu_yu@163.com.