Relationship of glycemic variability with delirium and mortality among critically ill elderly patients with sepsis: A retrospective matched cohort study - Jianqin Huang; Jiexuan Xu; Yu Zhai; Shuting Liu; Pengcheng Duan; Jiayan Liang; Yile Tian; Murong Lu; Xuemei Liu; Hongjing Yu (PLoS ONE, 2026)