Direct aortic route versus transaxillary route for transcatheter aortic valve replacement: a systematic review and meta-analysis oleh Hsiu-An Lee, I-Li Su, Shao-Wei Chen, Victor Chien-Chia Wu, Dong-Yi Chen, Pao-Hsien Chu, An-Hsun Chou, Yu-Ting Cheng, Pyng-Jing Lin, Feng-Chun Tsai