Endoscopic submucosal dissection with the combination of a scissor-type knife and novel traction method for colonic neoplasm involving a diverticulum by Kazumasa Kawashima, MD, PhD, Takuto Hikichi, MD, PhD, Naohiko Gunji, MD, PhD, Michio Onizawa, MD, PhD, Hiromasa Ohira, MD, PhD

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