title: Lung-volume reduction surgery poses significant   mortality risks to the sickest patients.
authors.forename: R
authors.initials: R
authors.lastname: SoRelle
mesh_terms: D005541:Forced Expiratory Volume; D006801:Humans; D008168:Lung / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D011656:Pulmonary Emphysema / Q000503:physiopathology / Q000601:surgery*; D012307:Risk Factors; D016019:Survival Analysis