Sodium cromoglycate in the treatment of chronic allergic rhinitis.
D000328:Adult; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D004205:Cromolyn Sodium / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D010919:Placebos; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*
D010919:Placebos; D004205:Cromolyn Sodium