4Pullan RD, Rhodes J, Ganosh S ,et al. Tansdermal nicotine for active ulcerative colitis. New Engl J Med,1994,330: 811-815.
5Seo M, Kada M, Yao T, et al. An index of disease activity in patients with ulcerative colitis. Am J Gastroenterol, 1992, 87:971-976.
6Seo M, Kada M, Yao T, et al. Evaluation of disease activity in patients with moderately active ulcerative colitis: comparisons between a new activity index and Truelove and Witts classification. Am J Gastroenterol, 1995, 90: 1759-1763.
7Farmer M, Petras RE, Hunt LF, et al. The importance of diagnostic accuracy in colonic inflammatory bowel disease. Am J Gastroenterol,2000,95:3 184-3 188.
8Bitton A, Peppercorn MA, Antonioli DA, et al. Clinical, biological and histologic parameters as predictors of relapse in ulcerative colitis. Gastroenterology, 2001,120:13 -20.
9Tanaka M, Ridder RH, Saito H, et al. Morphologic criteria applicable to biopsy specimens for effective distinction of inflammatory bowel disease from other forms of colitis and Crohn's disease from ulcerative colitis. Scand J Gastroenterol, 1999,34:55-67.
10Matsumoto T, Kuroki F, Mizuno M, et al. Application of magnifying chromoscopy for the assessment of severity in patients with mild to moderate ulcerative colitis. Gastrointest Endosc, 1997, 46:400-405.