1. Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
2. Department of Obstetrics & Gynecology, the Affiliated Hospital of Jiangnan University & the Fourth People's Hospital of Wuxi, Wuxi, China
3. Division of Gynecological Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Department of Obstetrics & Gynecology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
5. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA