Clinical COPD phenotypes identified by cluster analysis: validation with mortality
Pierre-Régis Burgel, Nicolas Roche, Jean-Louis Paillasseur, Isabelle Tillie-Leblond, Pascal Chanez, Roger Escamilla, Isabelle Court-Fortune, Thierry Perez, Philippe Carré, Denis Caillaud on behalf of the INITIATIVES BPCO scientific committee
European Respiratory Journal 2012 40: 495-496; DOI: 10.1183/09031936.00228511