1. Shanghai First Maternity and Infant HospitalTongji University School of MedicineShanghaiChina
2. Center for Reproductive MedicineRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
3. Shanghai Key Laboratory for Assisted Reproduction and Reproductive GeneticsShanghaiChina
4. Maternity and Infant Hospital of Changning DistrictShanghaiChina