The changing picture of otitis media in childhood.
D000658:Amoxicillin / Q000627:therapeutic use; D000667:Ampicillin / Q000627:therapeutic use; D002648:Child; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D007223:Infant; D010033:Otitis Media / Q000188:drug therapy / Q000453:epidemiology*
D000667:Ampicillin; D000658:Amoxicillin