AUTHOR=Dai Bowen , Jiang Jiaping , Yu Xiaoyu , Zhan Haihua , Hu Zhengchuan TITLE=Efficacy and safety of nivolumab plus ipilimumab in gastrointestinal cancers: a systematic review and meta-analysis JOURNAL=Frontiers in Oncology VOLUME=14 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2024.1515992 DOI=10.3389/fonc.2024.1515992 ISSN=2234-943X