title: Hay fever in a student population. A trial of disodium cromoglycate.
mesh_terms: D002986:Clinical Trials as Topic; D004205:Cromolyn Sodium / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D010919:Placebos; D011208:Powders; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*
chemical_list: D010919:Placebos; D011208:Powders; D004205:Cromolyn Sodium