title: The National Emphysema Treatment Trial--how strong is the evidence?
authors.forename: James H
authors.initials: JH
authors.lastname: Ware
mesh_terms: D003627:Data Interpretation, Statistical; D017079:Exercise Tolerance; D006801:Humans; D017063:Outcome Assessment, Health Care; D011013:Pneumonectomy; D011656:Pulmonary Emphysema / Q000188:drug therapy / Q000401:mortality / Q000601:surgery*