[Prolonged course of pneumonias].
D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D006801:Humans; D011014:Pneumonia / Q000188:drug therapy*; D013424:Sulfanilamides / Q000627:therapeutic use; D013997:Time Factors
D000900:Anti-Bacterial Agents; D013424:Sulfanilamides
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