1. Department of Obstetrics and Gynecology The Third Affiliated Hospital of Zhengzhou University Zhengzhou China
2. Department of Prenatal Diagnosis and Fetal Therapy The Third Affiliated Hospital of Zhengzhou University Zhengzhou China
3. Department of Gynecology, Shenzhen Second People's Hospital The First Affiliated Hospital of Shenzhen University Health Science Center Shenzhen China
4. Department of Imaging The Third Affiliated Hospital of Zhengzhou University Zhengzhou China