RT Journal Article SR Electronic T1 Clinical COPD phenotypes identified by cluster analysis: validation with mortality JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 495 OP 496 DO 10.1183/09031936.00228511 VO 40 IS 2 A1 Burgel, Pierre-Régis A1 Roche, Nicolas A1 Paillasseur, Jean-Louis A1 Tillie-Leblond, Isabelle A1 Chanez, Pascal A1 Escamilla, Roger A1 Court-Fortune, Isabelle A1 Perez, Thierry A1 Carré, Philippe A1 Caillaud, Denis YR 2012 UL http://erj.ersjournals.com/content/40/2/495.abstract AB