title: Combination bronchodilator therapy in COPD.
authors.affiliation: University of Nebraska Medical Center, Omaha.
authors.forename: S I
authors.initials: SI
authors.lastname: Rennard
mesh_terms: D000318:Adrenergic beta-Agonists / Q000627:therapeutic use*; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D018680:Cholinergic Antagonists / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy*; D013806:Theophylline / Q000627:therapeutic use
chemical_list: D000318:Adrenergic beta-Agonists; D001993:Bronchodilator Agents; D018680:Cholinergic Antagonists; D013806:Theophylline