RT Journal Article SR Electronic T1 Curvilinearity provides additional information to lung clearance index only in a minority of children with early cystic fibrosis lung disease JF ERJ Open Research JO erjor FD European Respiratory Society SP 00582-2021 DO 10.1183/23120541.00582-2021 VO 8 IS 2 A1 Irving, Samantha A1 Bayfield, Katie A1 Davies, Jane C. A1 Bush, Andrew YR 2022 UL http://openres.ersjournals.com/content/8/2/00582-2021.abstract AB