Investigation of a Hydrodynamic Performance of a Ventricular Assist Device After Its Long-Term Use in Clinical Application. - Yuma Kokuzawa; Tomohiro Shima; Masateru Furusato; Kazuhiko Ito; Takashi Tanaka; Toshihiro Igarashi; Tomohiro Nishinaka; Kiyotaka Iwasaki; Mitsuo Umezu (LSMS (2), 2007)