Pretreatment quality of life as a predictor of survival for patients with nasopharyngeal carcinoma treated with IMRT. - Guo, Shan-Shan; Hu, Wen; Chen, Qiu-Yan; Li, Jian-Mei; Zhu, Shi-Heng; He, Yan; Li, Jia-Wen; Xia, Le; Ji, Lu; Lin, Cui-Ying; Liu, Li-Ting; Tang, Lin-Quan; et al. (BMC Cancer, 2018)