Fecal microbiota, short chain fatty acids, bile acids, and colonic transit in Irritable Bowel SyndromeSHIN, ANDREANational Institutes of Health (NIH), National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) (ID: 5K23DK122015-03), $180,481USD, 2019-08-13 -- 2023-05-31