Theophylline and cromoglycate (cromolyn) in asthma.
D001249:Asthma / Q000188:drug therapy*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D004205:Cromolyn Sodium / Q000627:therapeutic use*; D004341:Drug Evaluation; D004359:Drug Therapy, Combination; D006801:Humans; D010919:Placebos; D013806:Theophylline / Q000627:therapeutic use*
D010919:Placebos; D013806:Theophylline; D004205:Cromolyn Sodium