1. Department of Gynecology and Obstetrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
2. Prenatal Diagnosis Center, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
3. Department of Obstetrics and Gynecology, Guangzhou Medical University, Guangzhou, China
4. Department of Breast Surgery and General Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China