1. Department of Obstetrics and Gynecology, Binhai County People’s Hospital, Yancheng, China
2. Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, Suzhou, China
3. Department of Radiology, Binhai County People’s Hospital, Yancheng, China
4. Department of Pathology, Binhai County People’s Hospital, Yancheng, China
5. Department of General Surgery, Binhai County People’s Hospital, Yancheng, China