This issue: upper respiratory tract infections.
Ellen R
ER
Wald
D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D006801:Humans; D012141:Respiratory Tract Infections / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology
D000900:Anti-Bacterial Agents