Source
International Foundation for Functional Gastrointestinal Disorders (IFFGD). About Irritable Bowel Syndrome. Accessed August 16, 2012
The Merck Manual. Irritable Bowel Syndrome (IBS). Accessed August 16, 2012
National Digestive Diseases Information Clearinghouse (NDDIC). Irritable Bowel Syndrome. Accessed August 16, 2012
Written by familydoctor.org editorial staff
Reviewed/Updated: 08/12
Created: 12/96