title: The effect of metaproterenol in chronic asthmatic children receiving therapeutic doses of theophylline.
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000188:drug therapy* / Q000503:physiopathology; D002648:Child; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008297:Male; D008450:Maximal Midexpiratory Flow Rate; D009921:Metaproterenol / Q000627:therapeutic use*; D010919:Placebos; D013806:Theophylline / Q000627:therapeutic use*; D014797:Vital Capacity
chemical_list: D010919:Placebos; D009921:Metaproterenol; D013806:Theophylline