Validation of treatment algorithm based on the Japan narrow-band imaging expert team classification for sub-centimeter colorectal polyps oleh Motohiko Kato, Keiichiro Abe, Yoko Kubosawa, Yukie Sunata, Yuichiro Hirai, Tetsu Hirata, Yoshiaki Takada, Michiko Wada, Yusaku Takatori, Shigeo Banno, Satoshi Kinoshita, Hideki Mori, Kaoru Takabayashi, Masahiro Kikuchi, Junichi Shiraishi, Toshio Uraoka