1. Cancer statistics, 1984;Silverberg;CA,1984
2. The periodic health examination;Canadian Task Force on the Periodic Health Examination;Can Med Assoc J,1979
3. ACS report on the cancerrelated health checkup;The American Cancer Society;CA,1980
4. Preventative services for the well population;Fielding,1979
5. Colon Cancer Control Study: an interim report;Gilbertsen,1980