title: Prevention of exacerbations of chronic obstructive pulmonary disease with tiotropium.
authors.forename: Alec B
authors.initials: AB
authors.lastname: O'Connor
mesh_terms: D000280:Administration, Inhalation; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D018680:Cholinergic Antagonists / Q000008:administration & dosage*; D026690:Ethics, Clinical; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage*; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D012602:Scopolamine Derivatives / Q000008:administration & dosage*; D000069447:Tiotropium Bromide
chemical_list: D001993:Bronchodilator Agents; D018680:Cholinergic Antagonists; D012602:Scopolamine Derivatives; D009241:Ipratropium; D000069447:Tiotropium Bromide