citation journal title = Diseases of the Colon amp Rectum citation issn = 00123706 citation volume = 50 citation issue = 9 citation doi = 101007/103500070302x citation firstpage = 1384 citation lastpage = 1392 citation publication date = 2007/09/01 citation title = Hypermethylation ofp14arf May Be Predictive of Colitic Cancer in Patients with Ulcerative Colitis