Prognostic nomogram of overall survival for radiation therapy in hepatocellular carcinoma: a population study based on the SEER database and an external cohort - Chen, Lijun; Wu, Qiaoyuan; Fu, Jia; Jiang, Mengjie; Qiu, Jialin; Tao, Jiaomei; Lin, Litong; Chen, Shenshen; Wu, Yi; Yang, Zhengqiang; Li, Jianxu; Liang, Shixiong (Frontiers in Oncology, 2024)