American Gastroenterological Association website. Available at: http://www.gastro.org. Accessed March 6, 2006.
Crohn's and Colitis Foundation of America website. Available at: http://www.ccfa.org. Accessed March 6, 2006.
National Digestive Diseases Information Clearinghouse website. Available at: http://digestive.niddk.nih.gov. Accessed March 6, 2006.
Primary Care Medicine. 4th ed. Lippincott Williams and Wilkins; 2000.
Rakel RE and Bope ET. Conn's Current Therapy 2001. 53rd ed. Philadelphia, PA: W.B. Saunders Company; 2001.
6/17/2011 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed/what: Hou JK, Abraham B, El-Serag H. Dietary intake and risk of developing inflammatory bowel disease: a systematic review of the literature. Am J Gastroenterol. 2011;106(4):563-573.