Endoscopic submucosal dissection for remnant rectal neoplasm after ileal pouch-anal anastomosis for ulcerative colitis - Yoshii, Shunsuke; Shinzaki, Shinichiro; Hayashi, Yoshito; Tsujii, Yoshiki; Ashida, Munehiro; Iijima, Hideki; Takehara, Tetsuo (Endoscopy, 2019)