title: "Natural history" of Crohn's disease. An analytic review of the placebo lesson.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D003424:Crohn Disease / Q000503:physiopathology* / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010919:Placebos; D012075:Remission, Spontaneous
chemical_list: D010919:Placebos