PT - JOURNAL ARTICLE AU - M. Weatherall AU - P. Shirtcliffe AU - J. Travers AU - R. Beasley TI - Use of cluster analysis to define COPD phenotypes AID - 10.1183/09031936.00035210 DP - 2010 Sep 01 TA - European Respiratory Journal PG - 472--474 VI - 36 IP - 3 4099 - http://erj.ersjournals.com/content/36/3/472.short 4100 - http://erj.ersjournals.com/content/36/3/472.full SO - Eur Respir J2010 Sep 01; 36