1. Current trends in colorectal cancer: site, incidence, mortality and survival in England and Wales;Hayne;Clin Oncol (R Coll Radiol),2001
2. ABC of colorectal cancer: epidemiology;Boyle;BMJ,2000
3. Outcomes of colorectal cancer in the United States. No change in survival (1986-1997);Rabeneck;Am J Gastroenterol,2003
4. Polyps, adenocarcinomas, and other intestinal tumors;Schroy,2000
5. Barium enema in frail elderly patients;Segal;Gerontology,2000