title: Letter: Crohn's disease and anaerobic organisms.
mesh_terms: D000693:Anaerobiosis; D001424:Bacterial Infections / Q000188:drug therapy*; D002981:Clindamycin / Q000627:therapeutic use; D003424:Crohn Disease / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008795:Metronidazole / Q000627:therapeutic use
chemical_list: D008795:Metronidazole; D002981:Clindamycin