1. Pneumology and Allergy Department; Clinical and Experimental Respiratory Immunoallergy; IDIBAPS; CIBERES; Hospital Clinic; Barcelona Spain
2. Department of Allergy; Healthcare Research Institute IdiPAZ; CIBER de Enfermedades Respiratorias; CIBERES; Hospital Universitario La Paz; Madrid Spain
3. Immunoallergy Department; IBSAL-Hospital Universitario de Salamanca; Salamanca Spain
4. Allergy Department; Hospital Virgen Macarena; Sevilla Spain