Natural variability of lung function in primary ciliary dyskinesia: longitudinal analysis from the PROVALF-PCD cohort. - Zhang K; Kant A; Boon M; Borrelli M; Constant C; Castillo Corullon S; Cutrera R; Dillenhöfer S; Eryılmaz Polat S; Eralp E; Feyaerts N; Harris A; et al. (ERJ open research, 2025)