RT Journal Article SR Electronic T1 Expiratory flow-limitation detected by forced oscillation and negative expiratory pressure JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00038006 A1 R.L. DellacĂ  A1 N. Duffy A1 P.P. Pompilio A1 A. Aliverti A1 N.G. Koulouris A1 A. Pedotti A1 P.M.A. Calverley YR 2006 UL http://erj.ersjournals.com/content/early/2006/11/01/09031936.00038006.abstract AB