Crohn’s and Colitis Foundation of America - Information about Crohn’s disease.

Johns Hopkins Medical Institutions - Introduction to Crohn’s disease

The Mayo Clinic - Crohn’s disease overview

MedLine Plus - Interactive tutorial on Crohn’s

National Digestive Disease Information Clearinghouse - Information about Crohn’s disease.

University of Pennsylvania Digestive and Liver Centre - Information about Crohn’s disease.

Virtual Gastro Centre - Information about Crohn’s disease.