Sustained release theophylline and ephedrine therapy in chronic asthma.
D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002908:Chronic Disease; D003692:Delayed-Action Preparations; D004338:Drug Combinations; D004809:Ephedrine / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008297:Male; D013806:Theophylline / Q000008:administration & dosage*
D003692:Delayed-Action Preparations; D004338:Drug Combinations; D013806:Theophylline; D004809:Ephedrine