Harvard Center for Cancer Prevention
http://www.hsph.harvard.edu/cancer/

American Cancer Society: Cancer Prevention and Early Detection
http://www.cancer.org/downloads/STT/CPED2003PWSecured.pdf

American Cancer Society: Cancer Detection Guidelines
http://www.cancer.org/docroot/PED/content/
PED_2_3X_ACS_Cancer_Detection_Guidelines_36.asp

Behavioral Risk Factor Surveillance System (BRFSS)
http://www.cdc.gov/brfss/index.htm