1. Allergy Department University Hospital of Salamanca Salamanca Spain
2. Institute for Biomedical Research IBSAL Salamanca Spain
3. Department of Biomedical and Diagnostic Sciences University of Salamanca Salamanca Spain
4. Allergy Department Hospital La Paz Institute for Health Research (IdiPAZ) Madrid Spain
5. CIBER de Enfermedades Respiratorias (CIBERES) Madrid Spain
6. Allergology Clinical Management Unit (UGC) El Tomillar Hospital Sevilla Spain
7. Allergy Department Valladolid Medical Alliance Valladolid Spain
8. Immune System Diseases Department‐Allergy Unit Príncipe de Asturias University Hospital Madrid Spain
9. Department of Medicine and medical specialties (IRYCIS) University of Alcalá Madrid Spain
10. Allergy Unit University Hospital of Fuenlabrada Madrid Spain
11. Allergy Department Virgen de la Concha Hospital Zamora Spain
12. Allergy Department Infanta Sofía Hospital Madrid Spain
13. Allergy Department Severo Ochoa University Hospital Madrid Spain
14. Allergy Unit Alcorcón Foundation University Hospital Madrid Spain
15. Allergy Department Infanta Elena Hospital Valdemoro Spain
16. Allergy Unit Juan Ramón Jiménez Hospital Huelva Spain
17. Allergy Department Albacete University General Hospital Complex Albacete Spain