1. Centre of Reproductive Medicine; Shenzhen Second People's Hospital; The First Affiliated Hospital of Shenzhen University; Shenzhen China
2. Department of Obstetrics and Gynecology; Peking University Shenzhen Hospital; Shenzhen China
3. Reproductive Medicine Centre; Children's Hospital of Shanxi Province; Shanxi China
4. Shenzhen Key Laboratory of Fertility Regulation; Center of Assisted Reproduction and Embryology; The University of Hong Kong - Shenzhen Hospital; Shenzhen China