title: Lung volume reduction surgery for severe emphysema.
mesh_terms: D054598:Blue Cross Blue Shield Insurance Plans; D004646:Emphysema / Q000150:complications / Q000628:therapy*; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology; D017063:Outcome Assessment, Health Care; D011013:Pneumonectomy / Q000009:adverse effects; D016032:Randomized Controlled Trials as Topic; D012189:Retrospective Studies; D013673:Technology Assessment, Biomedical; D016896:Treatment Outcome; D014481:United States