title: Addition of long acting β agonist is not supported by clinical trial evidence.
authors.forename: J R
authors.initials: JR
authors.lastname: Manderville
mesh_terms: D000305:Adrenal Cortex Hormones / Q000008:administration & dosage*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
chemical_list: D000305:Adrenal Cortex Hormones; D001993:Bronchodilator Agents