A phase II clinical evaluation of radiofrequency ablation (RFA) combined with regorafenib and toripalimab in patients with colorectal cancer with liver metastases - Ouyang, Hui; Luo, Huiyan; Gao, Fei; Mie, Man; Ren, Chao; Li, Ji-Bin; Fu, Haiyan; Huang, Jin Shan (Journal of clinical oncology, 2024)