Gastroenterology Consultants, PA 
http://www.gastro-consults.com

About Gerd: Gastroesophageal Reflux Disease
http://www.aboutgerd.org

American College of Gastroenterology
http://www.acg.gi.org

American Gastroenterological Association
http://www.gastro.org

American Liver Foundation
http://www.liverfoundation.org

American Society for Gastrointestinal Endoscopy
http://www.asge.org

American Society for the Study of Liver Diseases
http://www.aasld.org

Celiac Sprue Association
http://www.csaceliacs.org

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

International Foundation for Functional Gastrointestinal Disorders
http://www.iffgd.org

The Mayo Clinic
http://www.mayoclinic.com

National Institute of Diabetes & Digestive & Kidney Diseases
http://www.niddk.nih.gov

Web MD
http://www.webmd.com

Yahoo Gastroenterology
http://dir.yahoo.com/Health/Medicine/Gastroenterology/