RT Journal Article SR Electronic T1 Reduced mitochondrial density in the vastus lateralis muscle of patients with COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00146906 A1 H.R. Gosker A1 M.K.C. Hesselink A1 H. Duimel A1 K.A. Ward A1 A.M.W.J. Schols YR 2007 UL http://erj.ersjournals.com/content/early/2007/04/11/09031936.00146906.abstract AB