AMERICAN GASTROENTEROLOGICAL ASSOCIATION AND THE AMERICAN DIGESTIVE HEALTH FOUNDATION includes information for physicians and the public about digestive disease symptoms, treatments, research initiatives, continuing medical education, practice management, medical position statements and public policy information.

This site is a collection of images and text describing normal and diseased gastrointestinal organs.

Department of Medicine, Columbia University College of Physicians & Surgeons ...

This site is the official page for the University of Texas at Houston Gatroenterology department.