4Ekbom A.Ulcerative colitis and colorectal caner:a population-based study [J] .N EnglJ Med,1990,323:1228 ~ 1233.
5Rutter M, Saunders B, et al. Severity of inflammation is a risk factor for colorectal neoplasia in ulcerative colitis [J]. Gastroenterology, 2004, 126:451 ~ 459.
6D Kornfeld. Is there an excess risk for colorectal cancer in patients with ulcerative colitis and concomitant primary sclerosing cholangitis? A population based study [J]. Gut, 1997,41:522 ~ 525.
7Edgar SL. Liu cigarette smoke exposure increases ulcerative colitis-associated colonic adenoma formation in mice [J]. Carcinogenesis,2003,24(8):1407 ~ 1413.
8Lindberg BU,Broome U, et al. Proximal colorectal dysplasia of cancer in ulcerative colitis: The impact of primary scerlerosing cholangitis and sulfasalazine:results from a 20-year surveillance study [J]. Dis Colon Rectum,2001,44:77 ~ 85.
9Eaden J. Review article: the data supporting a role for aminosalicylates in the chemoprevention of colorectal cancer in patients with inflammatory bowel disease [J]. Aliment Pharmacol Ther,2003,18(suppl 2): 15 ~ 21.
10Bernstein CN, et al. Does the use of 5-aminosalicylates in inflammatory bowel disease prevent the development of colorectal cancer [J]? Am J Gastroenterol, 2003,98: 2748 ~ 2788.