1. Immunology Department, IIS-Fundación Jiménez Díaz, Madrid, Spain
2. CIBER de Enfermedades Respiratorias, CIBERES, Spain
3. Allergy Department, Hospital Universitario San Cecilio, Granada, Spain
4. Allergy Department, Hospital Universitario Virgen del Rocío, Sevilla, Spain
5. Allergy Department, Policlínico, Sevilla, Spain
6. Allergy Department, Hospital Civil, Málaga, Spain