Lower respiratory tract infections in childhood.
D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012141:Respiratory Tract Infections / Q000188:drug therapy*
D000900:Anti-Bacterial Agents