title: The principles of management of patients with reversible airways obstruction: introduction.
mesh_terms: D000402:Airway Obstruction / Q000188:drug therapy*; D000628:Aminophylline / Q000627:therapeutic use; D006801:Humans; D014970:Xanthines / Q000627:therapeutic use*
chemical_list: D014970:Xanthines; D000628:Aminophylline