Feasibility and safety of a percutaneous and non-fluoroscopic procedure for left atrial appendage closure in patients for whom fluoroscopy presents risk: a cohort study - Zou, Mengxuan; Zhuang, Donglin; Sievert, Horst; Lam, Yat-Yin; Zhao, Guangzhi; Ouyang, Wenbin; Zhang, Fengwen; Fang, Fang; Zhang, Deyuan; Li, Anning; Pan, Xiangbin (Quantitative Imaging in Medicine and Surgery, 2023)