title: Clinical aspects of sustained release theophylline therapy: chairman's opening remarks.
mesh_terms: D001249:Asthma / Q000188:drug therapy; D002648:Child; D003692:Delayed-Action Preparations; D006801:Humans; D013806:Theophylline / Q000378:metabolism / Q000627:therapeutic use*
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline