RT Journal Article SR Electronic T1 The lower respiratory tract: the hot spot for chronic fixed airflow limitation JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2201214 DO 10.1183/13993003.01214-2022 VO 60 IS 4 A1 Francesca Polverino A1 Jose M. Marin YR 2022 UL http://erj.ersjournals.com/content/60/4/2201214.abstract AB