title: A double-blind trial of disodium cromoglycate in bronchial asthma wh assessment by four observers.
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002867:Chromones / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D010919:Placebos; D012138:Respiratory Therapy; D013147:Spirometry
chemical_list: D002867:Chromones; D010919:Placebos