American College of Gastroenterology

www.acg.gi.org

American Gastroenterological Association (AGA)

www.gastro.org

International Foundation for Functional and Gastrointestinal Disorders

www.iffgd.org

The Society of Gastrointestinal Endoscopic Surgeons (SAGES)

www.sages.org

The Society of Gastroenterology Nurses & Associations

www.sgna.org

Crohn’s and Colitis Foundation of America

www.ccfa.org

National Institute of Diabetes and Digestive and Kidney Diseases

http://digestive.niddk.nih.gov