title: The effect of metronidazole on tropical ulcers.
mesh_terms: D002986:Clinical Trials as Topic; D005892:Gingivitis, Necrotizing Ulcerative / Q000188:drug therapy*; D006801:Humans; D008795:Metronidazole / Q000008:administration & dosage*; D010919:Placebos
chemical_list: D010919:Placebos; D008795:Metronidazole