1. Immunoallergy Laboratory, Immunology Department, Fundación Jimenez Díaz Health Research Institute (IIS-FJD, UAM), 28040 Madrid, Spain
2. CIBER of Respiratory Diseases (CIBERES), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
3. Allergy Department, Fundación Jiménez Díaz University Hospital, 28040 Madrid, Spain
4. Pulmonology Unit, Fundación Jiménez Díaz University Hospital, 28040 Madrid, Spain
5. ENT and Cervicofacial Surgery Department, Fundación Jiménez Díaz University Hospital, 28040 Madrid, Spain
6. Department of Epidemiology, Fundación Jiménez Díaz University Hospital, 28040 Madrid, Spain
7. Data Analysis Department, I Fundación Jimenez Díaz Health Research Institute (IIS-FJD, UAM), Fundación Jiménez Díaz University Hospital, 28040 Madrid, Spain
8. Villalba General University Hospital, 28400 Madrid, Spain
9. Department of Medicine, Autonomous University of Madrid, 28049 Madrid, Spain