1. The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, China
2. Institute of Pediatrics, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
3. Department of Reproductive and Immunological Gynecology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
4. Department of Gynecology Outpatient, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China