Letter: Ampicillin-resistant Haemophilus influenzae in otitis media.
D000667:Ampicillin / Q000494:pharmacology / Q000627:therapeutic use; D006192:Haemophilus Infections / Q000188:drug therapy* / Q000382:microbiology; D006193:Haemophilus influenzae / Q000187:drug effects*; D006801:Humans; D010033:Otitis Media / Q000188:drug therapy* / Q000382:microbiology
D000667:Ampicillin