1. Clinical Medicine School, Ningxia Medical University, Yinchuan, P.R. China
2. Department of Laboratory Medicine, The Sixth People's Hospital of Yancheng City, Yancheng, P.R. China
3. Department of Oncology, The Sixth People's Hospital of Yancheng City, Yancheng, P.R. China
4. Department of Obstetrics and Gynecology, The Sixth People's Hospital of Yancheng City, Yancheng, P.R. China
5. Department of Pathology, The First People's Hospital of Yancheng City, Yancheng, P.R. China
6. Department of Pathology, The Sixth People's Hospital of Yancheng City, Yancheng, P.R. China
7. Department of Gynecology and Obstetrics, Fifth Hospital in Wuhan, Wuhan, Hubei Province, P.R. China