title: Plasma theophylline concentrations in patients with chronic obstructive airways disease after administration of a new sustained release theophylline formulation.
mesh_terms: D000368:Aged; D003692:Delayed-Action Preparations; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D013806:Theophylline / Q000008:administration & dosage / Q000097:blood* / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline