Cerebral functional abnormalities in patients with nasopharyngeal carcinoma after radiotherapy: an observational magnetic resonance resting-state study oleh Wen-Ting Ren, Ye-Xiong Li, Kai Wang, Li Gao, Jun-Lin Yi, Xiao-Dong Huang, Jing-Wei Luo, Run-Ye Wu, Yong Yang, Jian-Yang Wang, Wen-Qing Wang, Jing-Bo Wang, Feng Ye, Han Ouyang, Jian-Rong Dai, Li-Min Chen