3Winawer S J, Zauber AG, Ho MN, et al. Prevention of colorectal cancer by colonoscopic polypectomy. The National Polyp Study Workgroup. N Engl J Med,1993,329:1977-1981.
4Tamura S, Nakajo K, Yokoyama Y,et al. Evaluation of endoscopic mucosal resection for laterally spreading rectal tumors. Endoscopy,2004,36 : 306-312.
6Wave JD. How big is too big? Gastrointest Endosc, 1996,43:256-257.
7Hamilton SR, Aaltonen LA. World Health Organization classification of tumors. Pathology and genetics of tumors of digestive system. Lyon: 1ARC Press,2000.
8Soetikno R, Gotoda T, Nakanishi Y, et al. Endoscopic mucosal resection. Gastrointest Endosc,2003 ,57 :567-579.
9Shim CS. Endoscopic mucosal resection:an overview of the value of different techniques. Endoscopy ,2001,33:271-275.
