title: Single-entity sustained theophylline therapy for the pre-school child.
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002675:Child, Preschool; D003692:Delayed-Action Preparations; D004334:Drug Administration Schedule; D006801:Humans; D013806:Theophylline / Q000008:administration & dosage / Q000493:pharmacokinetics / Q000627:therapeutic use*
chemical_list: D003692:Delayed-Action Preparations; D013806:Theophylline