RT Journal Article SR Electronic T1 Lung hyperinflation in airway obstruction JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2440 OP 2440 DO 10.1183/09031936.96.09122440 VO 9 IS 12 A1 V Brusasco A1 JW Fitting YR 1996 UL http://erj.ersjournals.com/content/9/12/2440.abstract AB