Endoscopic submucosal dissection with a grasping-type scissors for early colorectal epithelial neoplasms: a large single-center experience oleh Kazuya Akahoshi, MD, PhD, Yuki Shiratsuchi, Masafumi Oya, MD, PhD, Hidenobu Koga, Masaru Kubokawa, MD, PhD, Naotaka Nakama, MD, Kazuaki Akahoshi, MD, Eikichi Ihara, MD, PhD