Feasibility of SAPIEN 3 20-mm Transcatheter Heart Valve Implantation in Aortic Stenosis Patients with a Small Aortic Annulus - Sugiyama, Kayo; Mukai, Kentaro; Watanabe, Atsushi; Suzuki, Mayu; Amano, Tetsuya; Matsuyama, Katsuhiko (Journal of Transcatheter Valve Therapies, 2021)