Links American Gastroenterological Association: patient education center American College of Gastroenterology: patient education center National Institutes of Health This is probably the most comprehensive site for excellent patient education in digestive and other diseases. Centers for Disease Control: advice on traveller’s diarrhea Check here before international travel to prevent against traveller's diarrhea. UNC One of the best centers for functional bowel disease. DUKE Advanced center for pancreatic and biliary diseases. WAKE FOREST Special interest in gastrointestinal motility disorder.