RT Journal Article SR Electronic T1 Multicomponent indices to predict survival in COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1206 OP 1206 DO 10.1183/09031936.00153113 VO 43 IS 4 A1 Martin R. Miller YR 2014 UL http://erj.ersjournals.com/content/43/4/1206.abstract AB