Winawer S, Fletcher R, Rex D, et al, Gastrointestinal Consortium Panel. Colorectal cancer screening and surveillance: clinical guidelines and rationale. Update based on new evidence. Gastroenterology. 2003;124(2):544-560. Accessed February 11, 2008. Available at:
National Cancer Institute. Understanding colorectal cancer risk tool. Accessed February 12, 2008. Available at:
National Cancer Institute. What you need to know about cancer of the colon and rectum. Accessed February 12, 2008. Available at:
National Cancer Institute. Obesity and cancer: questions and answers. Accessed February 12, 2008. Available at:
Limburg PJ, Vierkant RA, Fredericksen ZS, et al. Clinically confirmed type 2 diabetes mellitus and colorectal cancer risk: a population-based, retrospective cohort study. American Journal of Gastroenterology. 2006;101(8):1872-1879.