Multi-cohort validation study of a four-gene signature for risk stratification and treatment response prediction in hepatocellular carcinoma. - Cuicui Liu; Zhijun Xiao; Shenghong Wu; Zhen Yang; Guowen Ji; Jingjing Duan; Ting Zhou; Jinming Cao; Xiufeng Liu; Feng Xu (Comput. Biol. Medicine, 2023)