1. Cancer statistics, 1990;Silverberg;CA Cancer J Clin,1990
2. Young JL, Percy CL, Asire AJ. Surveillance, Epidemiology, and End Results: Incidence and Mortality Data. Young JL, Percy CL, Asire AJ, editors. US Printing Office, 1981:66.
3. The prevention of colon cancer;Sherlock;Am J Med,1980
4. Risk and screening for colorectal cancer;Winawer;Adv Int Med,1984
5. Carcinoma of the colon and rectum in persons <20 years of age;Hoerner;Am J Surg,1958