Boaventura Rita, Sibila Oriol, Agusti Alvar, Chalmers James D
Pulmonology Dept, Centro Hospitalar São João, Porto, Portugal.
Respiratory Dept, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
Eur Respir J. 2018 Sep 6;52(3). doi: 10.1183/13993003.01269-2018. Print 2018 Sep.