1. Department of Reproductive Endocrinology, Women’s Hospital, Zhejiang University School of Medicine, 1 Xueshi Road, Hangzhou 310006, China
2. Department of Gynaecology, Hangzhou Hospital of Traditional Chinese Medicine, Hangzhou 310007, China
3. Department of Gynaecology, Weifang Maternal and Child Health Hospital, Weifang 261000, China
4. Women’s Reproductive Health Laboratory of Zhejiang Province, Key Laboratory of Reproductive Genetics, Ministry of Education, Hangzhou 310006, China