2Ramirez JM,Aguilella V,Gracia JA,et al.Local full-thickness excision as first line treatment for sessile rectal adenomas:long-term results[J].Ann Surg,2009,249(2):225.
3Matsushita M,Wakamatsu T,Danbara N,et al.Complete endoscopic resection of large sessile or flat colorectal polyps with high-magnification chromoendoscopy or endoscopic submucosal dissection[J].Scand J Gastroenterol,2008,43(8):1016.
