1. Department of Allergology; Hospital Clínico-Instituto de Investigación Sanitaria de Aragón; Zaragoza Spain
2. Oblikue Consulting; Barcelona Spain
3. Department of Allergology; University Hospital Marqués de Valdecilla; Santander Spain
4. Allergy Unit; Hospital Universitario Arnau de Vilanova; Facultad de Medicina; Universidad Católica de Valencia “San Vicente Mártir”; Valencia Spain
5. UGC Intercentros Alergología de Sevilla; Hospital El Tomillar; Sevilla Spain
6. Department of Allergology; Hospital Municipal; Badalona Serveis Assistencials; Badalona Spain
7. Sant Pere Claver Fundació Sanitària; Barcelona Spain
8. Department of Allergology; University Hospital of Salamanca; Instituto de Investigaciones Biosanitarias de Salamanca; IBSAL; Salamanca Spain
9. Department of Allergology; Hospital El Bierzo; Ponferrada; León Spain
10. Department of Allergology; Hospital Infantil Universitario Niño Jesús; IIS Princesa; Madrid Spain
11. Department of Allergology; Hospital La Paz; Madrid Spain
12. Department of Allergology; Hospital Universitario de Canarias; Tenerife Spain
13. Allergy Unit; IBIMA-Regional University Hospital of Málaga; UMA; Malaga Spain
14. UGC Neumología-Alergia; Complejo Hospitalario Universitario de Huelva; Spain
15. Allergy Unit; Servei de Pneumologia i Al.lèrgia Respiratòria; Hospital Clínic; Barcelona Spain
16. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona; Spain
17. Centro de Investigación Biomédica en red en Enfermedades Respiratorias (CIBERES); Barcelona Spain