American Gastroenterological Association web site.
The American College of Gastroenterology. The College promotes the highest
standards in medical education and is guided by its commitment to meeting
the needs of clinical gastroenterology practitioners.
CCFA's mission is to cure and prevent Crohn's disease and ulcerative colitis
through research, and to improve the quality of life of children and adults
affected by these digestive diseases through education and support.
American Liver Foundation
The Hepatitis Information Network
CDF provides support, information and assistance to people affected by Celiac Disease and Dermatitis Herpetiformis (CD/DH).
UpToDate Digestive Diseases
UpToDate Liver Disease