1. World Health Organization. International Agency for Research on Cancer (IARC) (2011). Available at
http://www-dep.iarc.fr/
Accessed December 3, 2011
2. American Cancer Society (2008) Colorectal Cancer Facts & Figures 2008–2010. American Cancer Society, Atlanta
3. American Cancer Society (2011) Cancer Facts & Figures 2011. American Cancer Society, Atlanta
4. Center MM, Jemal A, Smith RA, Ward E (2009) Worldwide variations in Colorectal Cancer. CA Cancer J Clin 59:366–378
5. National Cancer Institute (2011) Rectal Cancer Treatment (PDQ®).
http://www.cancer.gov/