GSDL Inflammatory Bowel Disease (IBD) - A list of laboratory assessments that can uncover functional imbalances linked to inflammatory bowel disease (IBD). - http://www.gsdl.com/assessments/finddisease/ibd/
Center For Intestinal Dysfunction - Treatment and research faciliaty located at Columbia Presbyterian Hospital in New York City. - http://cpmcnet.columbia.edu/dept/gi/IBS.html
UNC Center for Functional GI & Motility Disorders - Research and treatment center for IBS and related disorders at the University of North Carolina. - http://www.med.unc.edu/wrkunits/2depts/medicine/fgidc/