Efficacy and safety of first-line PD-1/PD-L1 inhibitor in combination with CTLA-4 inhibitor in the treatment of patients with advanced non-small cell lung cancer: a systemic review and meta-analysis - Zhao, Huimin; Huang, Shanshan; Wu, Jianyu; Lu, Yanlan; Zou, Yue; Zeng, Haijian; Li, Chunlan; Wang, Jin; Zhang, Xiaochen; Duan, Siliang; Liang, Weiming (Frontiers in Immunology, 2025)