Two-point fixed pulley-traction method in endoscopic submucosal dissection for early gastric neoplasm - Takeuchi, Tsubasa; Esaki, Mitsuru; Minoda, Yosuke; Hata, Yoshitaka; Ogino, Haruei; Ihara, Eikichi; Ogawa, Yoshihiro (Endoscopy, 2023)