HLA class I expression and its alteration by preoperative hyperthermo-chemoradiotherapy in patients with rectal cancer. di Hiro Sato, Yoshiyuki Suzuki, Munenori Ide, Toshihide Katoh, Shin-Ei Noda, Ken Ando, Takahiro Oike, Yuya Yoshimoto, Noriyuki Okonogi, Kousaku Mimura, Takayuki Asao, Hiroyuki Kuwano, Takashi Nakano