Colon and rectal cancer.
National Cancer Institute
website. Available at:
Accessed May 14, 2013.
Colorectal cancer. American Cancer Society website. Available at: http://www.cancer.org/acs/groups/cid/documents/webcontent/003096-pdf.pdf. Updated January 17, 2013. Accessed May 14, 2013.
Colorectal cancer. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php. Updated May 3, 2013. Accessed May 14, 2013.
7/22/2011 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed: Kohler BA, Ward E, et al. Annual report to the nation on the status of cancer, 1975-2007, featuring tumors of the brain and other nervous system.
J Natl Cancer Inst.