Clinical results of proton beam therapy for hepatocellular carcinoma over 5 cm. - Kimura, Kanako; Nakamura, Tatsuya; Ono, Takashi; Azami, Yusuke; Suzuki, Motohisa; Wada, Hitoshi; Takayama, Kanako; Endo, Hiromasa; Takeyama, Teruhito; Hirose, Katsumi; Takai, Yoshihiro; Kikuchi, Yasuhiro (Hepatology Research, 2017)