title: Tiotropium versus salmeterol in COPD.
authors.forename: Louise
authors.initials: L
authors.lastname: Restrick
authors.forename: Myra
authors.initials: M
authors.lastname: Stern
authors.forename: Noel
authors.initials: N
authors.lastname: Baxter
mesh_terms: D000280:Administration, Inhalation; D000420:Albuterol / Q000031:analogs & derivatives / Q000627:therapeutic use; D001993:Bronchodilator Agents / Q000627:therapeutic use; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy / Q000628:therapy*; D000068299:Salmeterol Xinafoate; D012602:Scopolamine Derivatives / Q000627:therapeutic use; D016540:Smoking Cessation; D000069447:Tiotropium Bromide
chemical_list: D001993:Bronchodilator Agents; D012602:Scopolamine Derivatives; D000068299:Salmeterol Xinafoate; D000420:Albuterol; D000069447:Tiotropium Bromide