Gastrointestinal hemorrhage caused by the direct invasion of a hepatocellular carcinoma successfully treated with polyglycolic acid sheet shielding - Mannami, Tomohiko; Fujiwara, Nobukiyo; Ikeda, Genyo; Mishima, Takahito; Kuroi, Taiga; Muraoka, Takayuki; Ohtawa, Yasuyuki (Endoscopy, 2019)