RT Journal Article SR Electronic T1 Variability and effects of bronchial colonisation in patients with moderate COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00126808 A1 A. Marin A1 E. Monsó A1 M. Garcia A1 J. Sauleda A1 A. Noguera A1 J. Pons A1 A. Agustí A1 J. Morera YR 2009 UL http://erj.ersjournals.com/content/early/2009/07/30/09031936.00126808.abstract AB