1. Hospital Clínic de Barcelona; Thorax Clinic Institute; Respiratory Diagnostic Centre; Barcelona Catalonia Spain
2. August Pi i Sunyer Biomedical Research Institute (IDIBAPS); University of Barcelona; Barcelona Catalonia Spain
3. Center for Biomedical Network Research in Respiratory Diseases (CIBERES); Barcelona Catalonia Spain
4. Parc de Salut Mar; Pulmonary Medicine Department; Hospital del Mar Medical Research Institute (IMIM); Pompeu Fabra University; Barcelona Catalonia Spain
5. Epidemiology Department; Centre for Research in Environmental Epidemiology (CREAL); Barcelona Catalonia Spain
6. Center for Biomedical Network Research in Epidemiology and Public Health (CIBERESP); Barcelona Catalonia Spain
7. Blanquerna Health Sciences Faculty; Ramon Llull University; Barcelona Catalonia Spain
8. Respiratory Department; Cardiovascular Foundation from Colombia Floridablanca; Santander Colombia