5Shi Q, Ju H, Yao LQ, et al. Risk factors for postoperative stricture after endoscopic submucosal dissection for super- ficial esophageal carcinoma[J]. Endoscopy,2014,46(8) : 640-644.
6Oyama T. Esophageal ESD: technique and prevention of complications [ J ]. Gastrointest Endosc Clin N Am, 2014, 24(2):201-212.
7Kato M.Endoscopic submucosal dissection(ESD)is being accepted as a new procedure of endoscopic treatment of "early gastric cancer[ J ]. Internal Med, 2005,44 (2) : 85-86.
8Gotoda T, Kondo H,Ono H,et al. A new endoscopic mu- cosal resection procedure using an insulation tipped- diathermic knife for rectal fiat lesions[J]. Gastrointest En- close, 1999,50(4) : 560-563.
9Hopchik J. Expanding the role of the advanced practice registered nurse as an endoscopist[J]. Gastroenterol Nurs, 2013,36(4) : 289-290.