3Matsushita M, Wakamatsu T, Danbara N, et al. Complete endoscop- ic resection of large sessile or flat colorectal polyps with high-mag- nification chromoendoscopy or endoscopic submucosal dissection. Seand J Gastroenterol, 2008,43(8):1016-1017.
4Luigiano C, Consolo P, Scaffidi MG, et al. Endoscopic mucosal re- section for large and giant sessile and flat colorectal polyps: a sin- gle-center experience with long-term follow-up. Endoscopy, 2009, 41(10):829-835.
5Kaltenbach T, Friedland S, Maheshwad A, et al. Short- and long- term outcomes of standardized EMR of nonpolypoid (flat and de- pressed) colorectal lesions > or = 1 cm (with video). Gastroentest Endosc, 2007,65(6):857-865.