Evaluation of the extended Japan NBI expert team classification of subtype 2B in laterally spreading colorectal tumors based on blue laser imaging. - Zheng, Lin Fu; Chen, Long Ping; Zhou, Lin Xin; Zheng, Jin; Jiang, Chuan Shen; Peng, Shi Rui; Li, Da Zhou; Wang, Wen (Journal of Digestive Diseases, 2024)