American College of Gastroenterology

American Gastroenterology Association

American Liver Foundation

Crohn’s and Colitis Foundation of America

Crohn’s Disease Resource Center

The Mayo Clinic

Med Help International

Medline Plus Health Information

National Cancer Institute

National Institute of Diabetes & Digestive & Kidney Diseases

National Institutes of Health

National Library of Medicine

ServiceLink of Strafford County

What Patients Need to Know

Your Digestive System and How it Works