PT - JOURNAL ARTICLE AU - J. P. de Torres AU - C. Casanova AU - B. R. Celli TI - <em>From the authors:</em> AID - 10.1183/09031936.00061409 DP - 2009 Jul 01 TA - European Respiratory Journal PG - 289--289 VI - 34 IP - 1 4099 - http://erj.ersjournals.com/content/34/1/289.short 4100 - http://erj.ersjournals.com/content/34/1/289.full SO - Eur Respir J2009 Jul 01; 34