1. Department of Fetal Medicine & Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University Shanghai PR China
2. Clinical and Translational Research Center, Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University Shanghai PR China
3. Department of Obstetrics, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University Shanghai PR China
4. Department of Pathology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University Shanghai PR China