Evaluation of left atrial function and the relationship between left atrial stiffness index and exercise capacity in hypertension-related heart failure with preserved ejection fraction - Zhang, Qingfeng; Wang, Sijia; Zhang, Hongmei; Wang, Kai; Li, Wenhua; Ding, Geqi; Ye, Luwei; Li, Chunmei; Deng, Yan; Wang, Yi; Yin, Lixue (Frontiers in Cardiovascular Medicine, 2024)