RT Journal Article SR Electronic T1 Repeatability of impulse oscillometry in patients with severe asthma JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2101679 DO 10.1183/13993003.01679-2021 A1 Rory Chan A1 Rasads Misirovs A1 Brian Lipworth YR 2021 UL http://erj.ersjournals.com/content/early/2021/09/29/13993003.01679-2021.abstract AB