RT Journal Article SR Electronic T1 Gender differences in emphysema phenotype in smokers without airflow obstruction JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00109808 A1 N. Sverzellati A1 E. Calabrò A1 G. Randi A1 C. La Vecchia A1 A. Marchianò A1 J-M. Kuhnigk A1 M. Zompatori A1 P. Spagnolo A1 U. Pastorino YR 2009 UL http://erj.ersjournals.com/content/early/2009/02/05/09031936.00109808.abstract AB