title: Lumping and splitting through thick and thin bowel.
authors.forename: D A
authors.initials: DA
authors.lastname: Morowitz
mesh_terms: D003093:Colitis, Ulcerative / Q000145:classification* / Q000175:diagnosis; D003424:Crohn Disease / Q000145:classification* / Q000175:diagnosis; D006801:Humans; D009626:Terminology as Topic