title: Exercise in COPD: damned if you do and damned if you don't.
authors.forename: P T
authors.initials: PT
authors.lastname: Macklem
mesh_terms: D001993:Bronchodilator Agents / Q000627:therapeutic use*; D017079:Exercise Tolerance; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D001993:Bronchodilator Agents