Upper respiratory illness in perspective.
D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D004739:England; D005500:Follow-Up Studies; D006801:Humans; D012141:Respiratory Tract Infections / Q000188:drug therapy* / Q000453:epidemiology / Q000209:etiology; D012621:Seasons
D000900:Anti-Bacterial Agents