Rational use of oral theophylline in the treatment of chronic asthma.
D000284:Administration, Oral; D001249:Asthma / Q000188:drug therapy*; D002908:Chronic Disease; D006801:Humans; D013806:Theophylline / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use
D013806:Theophylline