title: Too many options, too little choice in COPD?
mesh_terms: D000280:Administration, Inhalation; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage / Q000627:therapeutic use; D000318:Adrenergic beta-Agonists / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D018727:Muscarinic Antagonists / Q000008:administration & dosage / Q000627:therapeutic use; D009330:Nebulizers and Vaporizers / Q000639:trends*; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*
chemical_list: D000305:Adrenal Cortex Hormones; D000318:Adrenergic beta-Agonists; D018727:Muscarinic Antagonists