Effect of liver metastasis on the efficacy of immune checkpoint inhibitors in cancer patients: a systemic review and meta-analysis

Bao‐Wen Tian, Cheng‐Long Han, Hanchao Wang, Lun‐Jie Yan, Zi‐Niu Ding, Hui Liu, Xin‐Cheng Mao, Jin-Cheng Tian, Jun-Shuai Xue, Long-Shan Yang, Si-Yu Tan, Zhao‐Ru Dong, Yu‐Chuan Yan, Dongxu Wang, Tao Li