Association between dietary patterns and sarcopenia among community-dwelling older adults in five provinces of China: a cross-sectional study - Pu, Rongchang; Jia, Shanshan; Zhang, Xiaona; Man, Qingqing; Yu, Dongmei; Cai, Shuya; Song, Pengkun; Zhang, Jian (Frontiers in Public Health, 2025)