RT Journal Article SR Electronic T1 Lung volume reduction surgery for emphysema: answers are beginning to accumulate JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1771 OP 1772 DO 10.1183/09031936.96.09091771 VO 9 IS 9 A1 Thompson, AB YR 1996 UL http://erj.ersjournals.com/content/9/9/1771.abstract AB