1. Department of Pediatrics, Obstetrics and Gynecology, University of Valencia, Valencia, Spain
2. Pediatric Pulmonology and Allergy Unit, Dr. Peset University Hospital, Valencia, Spain
3. Pediatric Pulmonology and Allergy Unit, Pediatric Service, Hospital del Mar, Barcelona, Spain
4. Pediatric Allergy and Pulmonology Unit, Hospital Universitario Parc Taulí, Sabadell, Spain
5. Childhood Pneumoallergy Unit, Hospital Universitario Puerta del Mar, Cádiz, Spain
6. Allergy Department, University Hospital Niño Jesús, IIS-IP, Madrid, Spain
7. Medical Advisor Xolair-Asma, Novartis, Barcelona, Spain
8. Pediatric Pulmonology and Allergy Unit, Children’s Hospital la Fe, Valencia, Spain
9. Allergy and Clinical Immunology Service, Hospital Sant Joan de Déu, Barcelona, Spain
10. Pediatric Service, Hospital de Sagunto, Valencia, Spain
11. Allergy Department, Hospital Vithas-Xanit Internacional, Málaga, Spain
12. Pediatric Pulmonology Unit, University Hospital Virgen de la Arrixaca, IMIB Bio-Health Research Institute, Murcia, Spain
13. Allergology Service, Complejo Hospitalario de Navarra, Pamplona, Spain
14. Pediatric Allergy and Pulmonology Unit, Children´s University Hospital Reina Sofía, Córdoba, Spain
15. Pediatric Allergy Unit, Maternal and Child Hospital Gregorio Marañón, Madrid, Spain