1. Long-term risk of colorectal cancer after excision of rectosigmoid adenomas;Atkin, W.S.; Morson, B.C.; Cuzick, J.;N Engl _J Med,1992
2. Risk and surveillance of individuals with colorectal polyps. WHO Collaborating Centre for the Prevention of Colorectal Cancer;true;Bull WHO,1990
3. The prevalence of polyps of the large intestine in Oslo: an autopsy study;Vatn, M.H.; Stalsberg, H.;Cancer,1982
4. Polyps and cancer of the large bowel: a necropsy study in Liverpool;Williams, A.R.; Balasooriya, B.A.W.; Day, D.W.;Gut,1982
5. Colonoscopic screening of persons with suspected risk factors for colon cancer: II. Past history of colorectal neoplasms;Grossman, S.; Milos, M.L.; Tekawa, I.S.; Jewell, N.P.;Gastroenterology,1989