1 Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, P. R. China.
2 Research Unit of Radiation Oncology, Chinese Academy of Medical Sciences, Jinan, Shandong, 250117, P. R. China.
3 Department of Gynecologic 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 Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, P. R. China.