1. Department of Obstetrics and Gynaecology; Reproductive Medical Centre; Peking University Third Hospital; Beijing China
2. Key Laboratory of Assisted Reproduction; Ministry of Education; Beijing China
3. Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology; Beijing China
4. Reproductive Medical Centre; The Second Hospital of Hebei Medical University; Shijiazhuang China
5. Reproductive Medical Centre; Maternal and Children's Health Hospital of Fujian Province; Fuzhou China
6. Department of Obstetrics and Gynaecology; Reproductive Medical Centre; First Affiliated Hospital of Anhui Medical University; Hefei China
7. Reproductive Medical Centre; Affiliated Hospital of Inner Mongolia Medical University; Huhhot China
8. Department of Reproductive Endocrinology; Women's Hospital; School of Medicine; Zhejiang University; Hangzhou China
9. Population and Family Planning Research Institute of Heilongjiang Province; Harbin China
10. Centre for Reproductive Medicine; Shandong Provincial Hospital Affiliated to Shandong University; Jinan China
11. The Robinson Research Institute; School of Medicine; University of Adelaide; Adelaide SA Australia
12. The South Australian Health and Medical Research Institute; Adelaide SA Australia
13. Beijing Advanced Innovation Centre for Genomics; Beijing China
14. Peking-Tsinghua Centre for Life Sciences; Peking University; Beijing China