1. Shenzhen Maternity & Child Healthcare Hospital, The First School of Clinical Medicine, Southern Medical University, Shenzhen, Guangdong, P.R. China
2. Shenzhen Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, Guangdong, P.R. China
3. Department of Gynecology, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong, P.R. China
4. Department of Science and Education, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong, P.R. China
5. Department of Reproductive Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong, P.R. China