1. Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu 610041, China
2. Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
3. Department of Forensic Genetics, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China
4. Department of Pathology, West China Second University Hospital, Sichuan University, Chengdu 610041, China