Underwater and traction-assisted endoscopic submucosal dissection in the gastric fundus using a multibending endoscope - Hamada, Koichi; Horikawa, Yoshinori; Shiwa, Yoshiki; Techigawara, Kae; Ishikawa, Masafumi; Nishino, Noriyuki; Honda, Michitaka (Endoscopy, 2022)