"Development and Validation of a Biomarker for Diarrhea-Predominant Irritable Bowel Syndrome in Human Subjects" http://journals.plos.org/plosone/article?id=10.

"Development and Validation of a Biomarker for Diarrhea-Predominant Irritable Bowel Syndrome in Human Subjects" http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126438 http://journals.plos.org/plosone/article?id=10.1371/journal.... Large cohort study done determining what the biological mechanism are of IBS (irritable bowel syndrome). Defines a new test, IBSChek which can be used to determine if a patient has a subtype of IBS. Anyone can get this test done now.