American Dietetic Association
Crohn’s and Colitis Foundation(CCF)
Digestive Disease Center Harward
Digestive Disease Week
Endoscopic Ultrasound online (EUS online)
Fondazione IBD
Food and Drug Administration
Gastro net
GastroHep
Stanford University Liver Transplant Program
The Atlas of Gastrointestinal Endoscopy
The Helicobacter pylori foundation page
The Merck Manual of Diagnosis and Therapy
World Congress of Gastroenterology (OMGE)