title: Letter: Metronidazole in treatment of empyema.
mesh_terms: D000368:Aged; D001442:Bacteroides Infections / Q000188:drug therapy*; D002981:Clindamycin / Q000627:therapeutic use*; D004653:Empyema / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008795:Metronidazole / Q000627:therapeutic use*
chemical_list: D008795:Metronidazole; D002981:Clindamycin