title: Is the coprescription of beta blockers and beta2 agonists justified in COPD?
authors.forename: A
authors.initials: A
authors.lastname: Singh
mesh_terms: D058672:Adrenergic beta-2 Receptor Antagonists; D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
chemical_list: D058672:Adrenergic beta-2 Receptor Antagonists; D000319:Adrenergic beta-Antagonists