Usefulness of sheath lifting after saline injection technique for colorectal endoscopic submucosal dissection - Yoshimoto, Taiji; Yoshihara, Tomoatsu; Motozato, Kenichiro; Uraoka, Masanao; Takihara, Hiroshi; Inoue, Taro; Asano, Akira (Endoscopy, 2020)