Affiliation: | 1. Respiratory Department, Hospital Universitario Cruces, Osakidetza, Biocruces Bizkaia Health Research Institute, CibeRes, Barakaldo, Spain;2. Unitat Rehabilitació Cardio-Respiratoria, Hospital Universitari Vall d?tm)Hebron, Barcelona, Spain;3. Respiratory Department, Hospital del Mar, CibeRes, Barcelona, Spain;4. Respiratory Department, Hospital de la Santa Creu i San Pau, CibeRes, Barcelona, Spain;5. Respiratory Department, Complejo Hospitalario Navarra, Pamplona, Spain;6. Instituto de Biomedicina de Sevilla, Unidad Mèc)dico-Quirúrgica de Enfermedades Respiratorias, Hospital Virgen Rocío, Sevilla, Spain;7. Instituto de Biomedicina de Sevilla, Unidad Mèc)dico-Quirúrgica de Enfermedades Respiratorias, Hospital Virgen Rocio, CibeRes, Sevilla, Spain;8. Respiratory Department, Clínica Asunción, Tolosa, Gipuzkoa, Spain;9. Internal Medicine Department (Respiratory Unit), Hospital de Mendaro, Osakidetza, Mendaro, Gipuzkoa, Spain;10. Respiratory Department, Hospital General de Asturias, Oviedo, Spain;11. Respiratory Department, Hospital Universitario Marquèc)s de Valdecilla, Santander, Spain;12. Respiratory Department, Hospital Álvaro Cunqueiro, Vigo, Spain;13. Respiratory Department, Hospital Universitary Son Espases, Palma de Mallorca, CibeRes, Spain;14. Respiratory Department, Hospital Universitario Basurto, Bilbao, Spain;15. Clinical Epidemiology Unit, Hospital Universitario de Cruces, Biocruces Bizkaia, Health Research Institute, Bilbao, Spain |