1. Respiratory Department; Hospital Universitari Vall d'Hebron; Universitat Autònoma de Barcelona; Barcelona Spain
2. Ciber Enfermedades Respiratorias (CIBERES); Instituto de Salud Carlos III; Madrid Spain
3. Respiratory Department; Hospital Puerta de Hierro; Madrid Spain
4. Thoracic Surgery Department; Complexo Hospitalario Universitario A Coruña; A Coruña Spain
5. Respiratory Department; Hospital Reina Sofía; Córdoba Spain
6. Respiratory Department; Hospital Marqués de Valdecilla; Santander Spain
7. Respiratory Department; Hospital La Fe; Valencia Spain
8. Infectious Disease Department; Hospital Universitari Vall d'Hebrón; Barcelona Spain