Colon Cancer Research and Prevention Foundation http://www.preventcancer.org/colorectal

GA (American Gastroenterological Association) http://www.gastro.org

ASGE (American Society of Gastrointestinal Endoscopy) http://www.asge.org

SAGES (Society of American Gastrointestinal Endoscopic Surgeons) http://www.sages.org

Celiac Disease and Gluten-free Diet Support Center http://www.celiac.com

Centers for Disease Control and Prevention http://www.cdc.gov

Crohn’s and Colitis Foundation of America http://www.ccfa.org

Joint Commission on Accreditation of Healthcare Organizations (JCAHO) http://www.jointcommission.org

Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) http://www.niddk.nih.gov/index.htm