Diagnostic value of serum TGF-β1 and CysC in type 2 diabetic kidney disease: a cross-sectional study - Kang, Yi; Jin, Qian; Zhou, Mengqi; Zheng, Huijuan; Li, Xiaobin; Li, Aoshuang; Zhou, Jing Wei; Lv, Jie; Wang, Yaoxian (Frontiers in Medicine, 2025)