AUTHOR=Wei Lu , Chen Xiang , Liu Mengmeng TITLE=Global, regional, and national burden and trends of rheumatoid arthritis among the elderly population: an analysis based on the 2021 Global Burden of Disease study JOURNAL=Frontiers in Immunology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1547763 DOI=10.3389/fimmu.2025.1547763 ISSN=1664-3224