title: Inhaled corticosteroids: a controversial add-on treatment in COPD.
authors.forename: M A
authors.initials: MA
authors.lastname: Puhan
mesh_terms: D000280:Administration, Inhalation; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage* / Q000627:therapeutic use; D005541:Forced Expiratory Volume; D006801:Humans; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000453:epidemiology; D012107:Research Design; D016896:Treatment Outcome
chemical_list: D000305:Adrenal Cortex Hormones