title: Irritable bowel syndrome: 4 big questions.
authors.affiliation: Nature.
authors.forename: Michelle
authors.initials: M
authors.lastname: Grayson
mesh_terms: D015415:Biomarkers / Q000097:blood; D004035:Diet Therapy; D006801:Humans; D043183:Irritable Bowel Syndrome / Q000175:diagnosis* / Q000209:etiology* / Q000235:genetics / Q000382:microbiology / Q000523:psychology / Q000628:therapy; D012701:Serotonin / Q000378:metabolism*; D035501:Uncertainty
chemical_list: D015415:Biomarkers; D012701:Serotonin