Successful closure of huge perforation during rectal endoscopic submucosal dissection using an endoscopic string clip suturing method and polyglycolic acid sheets and fibrin glue - Abiko, Satoshi; Sano, Itsuki; Yoshikawa, Ayumu; Harada, Kazuaki; Kawagishi, Naoki; Oda, Hisashi; Miyagishima, Takuto (Endoscopy, 2021)