title: Scientific, clinical, and economic rationale for combination therapy in managing asthma: a paradigm for managed care.
authors.forename: A
authors.initials: A
authors.lastname: Turk
mesh_terms: D018927:Anti-Asthmatic Agents / Q000008:administration & dosage / Q000191:economics / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D006801:Humans; D008329:Managed Care Programs / Q000458:organization & administration*; D017410:Practice Guidelines as Topic; D014481:United States
chemical_list: D018927:Anti-Asthmatic Agents