Type 2 diabetes mellitus’ impact on heart failure patients’ exercise tolerance: a focus on maximal fat oxidation during exercise - Zhu, Huiying; Pan, Jianchao; Wen, Jianxuan; Dang, Xiaojing; Chen, Xiankun; Fan, Yunxiang; Lu, Weihui; Jiang, Wei (Frontiers in Cardiovascular Medicine, 2025)