Early experience with a novel transapical transcatheter aortic valve system in patients with severe aortic stenosis: a prospective, multicenter study - Liu, Lulu; Yang, Jian; Zhang, Haibo; Liu, Jian; Zhong, Yucheng; Wei, Lai; Liu, Xianbao; Jian, Zhao; Zhao, Yuan; Guo, Yingqiang (Frontiers in Cardiovascular Medicine, 2025)