1. American Cancer Society: Colorectal Cancer. “What are the key statistics about colorectal cancer?” Available at: www.cancer.org/cancer/colonandrectumcancer/detailedguide/colorectal-cancer-key-statistics. Accessed April 26, 2013.
2. Surveillance Epidemiology and End Results (SEER) Stat Fact Sheets: Colon and Rectum. Available at: http://seer.cancer.gov/statfacts/html/colorect.html. Accessed September 12, 2014.
3. AJCC Cancer Staging Manual;Edge,2010
4. How to evaluate risk and identify stage II patients requiring referral to a medical oncologist: a surgeon's perspective;Lavery;Oncology,2010
5. Prognostic impact of lymph node harvest and lymph node ratio in patients with colon cancer;Sjo;Dis Colon Rectum,2012