Comparison of the predictive value of CONUT, NLR, and PNI for 6-month and 1-year mortality in middle-aged and older adults with hip fractures: a retrospective study. - Chen ZQ; Lin L; Huang CZ; Zheng YQ; Lin MM; Fang YZ; Wang ZF; Zhang CH; Zhang JS; Liu XF (Frontiers in nutrition, 2026)