1. Cancer in colitis: assessment of individual risk by clinical and histological criteria;Lennard-Jones;Gastroenterology,1977
2. Malignant potential of chronic ulcerative colitis;Nugent;Gastroenterology,1979
3. Course and prognosis of ulcerative colitis. IV. Carcinoma of the colon;Edwards;Gut,1964
4. Colonoscopy: inefficacy for early carcinoma detection in patients with ulcerative colitis;Crowson;JAMA,1976
5. How to read clinical journals. III. To learn the clinical course and prognosis of disease;Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario;Can Med Assoc J,1981