title: Leukotriene receptor antagonists as add-on therapy for adults with asthma.
abstract: Assessment of the current evidence for the use of leukotriene receptor antagonists as add-on therapy at steps 3 and 4 of the guidelines for adults with moderate to severe asthma.
authors.forename: N C
authors.initials: NC
authors.lastname: Thomson
authors.forename: M
authors.initials: M
authors.lastname: Shepherd
mesh_terms: D000280:Administration, Inhalation; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage; D000328:Adult; D018927:Anti-Asthmatic Agents / Q000008:administration & dosage*; D001249:Asthma / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D006801:Humans; D020024:Leukotriene Antagonists / Q000008:administration & dosage*; D017410:Practice Guidelines as Topic
chemical_list: D000305:Adrenal Cortex Hormones; D018927:Anti-Asthmatic Agents; D020024:Leukotriene Antagonists