1. Department of Gynecological Oncology, Shandong University Cancer Center, Jinan, Shandong 250117, P.R. China
2. Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
3. Department of Gynecological Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
4. Department of Gynecology and Obstetrics, Wulian Maternal and Child Care Service Center, Rizhao, Shandong 262300, P.R. China
5. Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong 518116, P.R. China
6. Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
7. Department of Gynecological Oncology, Shandong University Cancer Center, Jinan, Shandong 250117, P.R. China