Takahiro Horimatsu, Yasushi Sano, Shinji Tanaka, Takuji Kawamura, Shoichi Saito, Mineo Iwatate, Shiro Oka, Koji Uno, Kenichi Yoshimura, Hideki Ishikawa, Manabu Muto, Hisao Tajiri, Next-generation narrow band imaging system for colonic polyp detection: a prospective multicenter randomized trial, International Journal of Colorectal Disease, 947-954, Volume 30, Issue 7, 30 Apr 2015, DOI 10.1007/s00384-015-2230-x.