A new xanthine derivative: theophylline with diethylenediamine; a clinical study.
D001249:Asthma / Q000628:therapy*; D035843:Biomedical Research; D010879:Piperazines / Q000627:therapeutic use*; D013806:Theophylline / Q000627:therapeutic use*; D019820:Xanthine; D014970:Xanthines
D010879:Piperazines; D014970:Xanthines; D019820:Xanthine; D013806:Theophylline
ASTHMA/therapy; PIPERAZINES/therapeutic use; THEOPHYLLINE/therapeutic use