Usefulness of endoscopic band ligation with gel immersion endoscopy for colonic diverticular bleeding and hemorrhoidal bleeding - Kobayashi, Yu; Ando, Katsuyoshi; Sasaki, Takahiro; Ueno, Nobuhiro; Kashima, Shin; Moriichi, Kentaro; Fujiya, Mikihiro (Endoscopy, 2021)