AUTHOR=Zhou Tongyi , Yu Yunfeng , Li Liu , Liu Xiu , Xiang Qin , Yu Rong TITLE=Bibliometric analysis of metformin as an immunomodulator (2013–2024) JOURNAL=Frontiers in Immunology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1526481 DOI=10.3389/fimmu.2024.1526481 ISSN=1664-3224