For an A to Z list of digestive disease topics with reliable patient educational material visit the National Digestive Disease Information Clearinghouse – a service of the National Institutes of Health.
- American Cancer Society
- American College of Gastroenterology (ACG)
- American Gastroenterological Association (AGA)
- American Liver Foundation (ALF)
- American Society for Gastrointestinal Endoscopy (ASGE)
- Association of Gastrointestinal Motility Disorders
- Center for Disease Control (CDC)
- Digestive Disease National Coalition
- National Cancer Institute
- National Digestive Disease Information Clearinghouse
- National Institutes of Health (NIH)