Positive association of triglyceride glucose index and gestational diabetes mellitus: a retrospective cohort study - Zhang, Jie; Fang, Xia; Song, Zhan; Guo, Xue-ke; Lin, Dong-mei; Jiang, Fei-na; Lin, Lin; Cai, Zhu-hua (Frontiers in Endocrinology, 2025)