1. Akihiro Ito, Ichiro Shintaku, Kazuhiko Orikasa, Shigeto Ishidoya, Takuhiro Yamaguchi, and Yoichi Arai, Tohoku University Graduate School of Medicine; Naomasa Ioritani and Masataka Aizawa, Sendai Shakai Hoken Hospital; Takashige Namima and Yoshihiro Ikeda, Tohoku Rosai Hospital, Sendai; Makoto Satoh, Sen-en General Hospital, Tagajo; Tatsuo Tochigi, Sadafumi Kawamura, and Hiroshi Aoki, Miyagi Cancer Center, Natori; Isao Numata, Atsushi Takeda, and Shunichi Namiki, Osaki Citizen Hospital, Osaki; Koichi...