Pocket-creation method of endoscopic submucosal dissection to achieve en bloc resection of giant colorectal subpedunculated neoplastic lesions - Hayashi, Yoshikazu; Sunada, Keijiro; Takahashi, Haruo; Shinhata, Hakuei; Lefor, Alan T.; Tanaka, Akira; Yamamoto, Hironori (Endoscopy, 2014)