DNA mismatch repair is not disrupted in stage 0 colorectal cancer resected using endoscopic submucosal dissection. - Sugiyama, Tomohiro; Iwaizumi, Moriya; Kaneko, Masanao; Tani, Shinya; Yamade, Mihoko; Hamaya, Yasushi; Furuta, Takahisa; Miyajima, Hiroaki; Osawa, Satoshi; Baba, Satoshi; Maekawa, Masato; Sugimoto, Ken (Oncology Letters, 2020)