RT Journal Article SR Electronic T1 Chronic Obstructive Pulmonary Disease (COPD) JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 133 OP 133 VO 18 IS 112 A1 E. Weitzenblum YR 2009 UL http://err.ersjournals.com/content/18/112/133.abstract AB