Predictive Model and Precaution for Oral Mucositis During Chemo-Radiotherapy in Nasopharyngeal Carcinoma Patients oleh Pei-Jing Li, Kai-Xin Li, Ting Jin, Hua-Ming Lin, Jia-Ben Fang, Shuang-Yan Yang, Wei Shen, Jia Chen, Jiang Zhang, Xiao-Zhong Chen, Ming Chen, Yuan-Yuan Chen