RT Journal Article SR Electronic T1 Changes in elastic fibres in the small airways and alveoli in COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00017207 A1 P.N. Black A1 P.S.T. Ching A1 B. Beaumont A1 S. Ranasinghe A1 G. Taylor A1 M.J. Merrilees YR 2008 UL http://erj.ersjournals.com/content/early/2008/01/23/09031936.00017207.abstract AB