1. Cancer statistics, 2001;Greenlee;CA Cancer J Clin,2001
2. Colorectal cancer screening: clinical guidelines and rationale;Winawer;Gastroenterology,1997
3. Winawer S.J. Natural history of colorectal cancer. Am J Med 1999;10(1A):3S-6S, 50S-57S.
4. Colorectal polyps in an unselected population: prevalence, characteristics, and associations;Cannon-Albright;Am J Gastroenterol,1994
5. Prevalence and malignant potential of colorectal polyps in asymptomatic, average risk men;DiSario;Am J Gastroenterol,1991