AUTHOR=Xu Lichun , Lin Liyu , Huang Xiaojin , Guan Aixuan , Cheng Lianfang , Zheng Yicen , Zhang Shuyi TITLE=Factors influencing mutual support among older people in China: a cross-sectional study JOURNAL=Frontiers in Public Health VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1439685 DOI=10.3389/fpubh.2025.1439685 ISSN=2296-2565