Letter: Drug treatment in Crohn's disease.
D003424:Crohn Disease / Q000188:drug therapy*; D004338:Drug Combinations; D004341:Drug Evaluation; D006801:Humans; D013420:Sulfamethoxazole / Q000627:therapeutic use; D014295:Trimethoprim / Q000627:therapeutic use
D004338:Drug Combinations; D014295:Trimethoprim; D013420:Sulfamethoxazole