title: Ethics of placebo controlled studies of inhaled steroids for COPD.
authors.forename: D L
authors.initials: DL
authors.lastname: Hahn
mesh_terms: D000280:Administration, Inhalation; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage*; D005541:Forced Expiratory Volume / Q000187:drug effects; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D016032:Randomized Controlled Trials as Topic / Q000941:ethics*
chemical_list: D000305:Adrenal Cortex Hormones