1. Department of Radliology, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai, China
2. Department of Radliology, Fudan University Shanghai Cancer Center, Shanghai, China
3. Department of Radliology, Shanghai Renji Hospital Affiliated to Jiaotong University, Shanghai, China
4. Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University, Shanghai, China