1Department of Pneumology, Hospital Xeral-Calde,
Rua Doutor Ochoa, Lugo, Spain
2Centro de Investigaciones Biomedicas en Red de Enfermedades Respiratorias (CIBERES),
Palma de Mallorca, Spain
3Department of Pneumology and Respiratory Allergy, Hospital Clínic, Universitat de Barcelona, Spain
4Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
5Department of Pneumology, Hospital Universitario V. del Rocío,
Sevilla, Spain
6Department of Pneumology, Hospital San Jorge,
Huesca, Spain
7Department of Pneumology, Hospital Francesc de Borja,
Gandía, Valencia, Spain
8Department of Pneumology. Hospital Universitario de Canarias,
San Cristobal de la Laguna, Tenerife, Spain
9Department of Pneumology, Hospital de Sagunto,
Sagunto, Valencia, Spain
10Department of Pneumology, Hospital de Figueras,
Girona, Spain
11Department of Allergy, Hospital Rafael Méndez,
Lorca, Murcia, Spain