1. Department of Allergy, Hospital La Paz Institute for Health Research and CIBER of Respiratory Diseases, CIBERES, Madrid, Spain
2. Unidad de Gestión Clínica Allergy-IBIMA, Hospital Regional Universitario, Malaga, Spain
3. Department of Allergy, Fundación Jiménez Díaz, Madrid, Spain
4. Allergy Section, Hospital General Universitario, Ciudad Real, Spain
5. Department of Allergy, Hospital Universitario Araba, Vitoria-Gasteiz, Spain
6. Allergy Unit, Hospital Santa Barbara, Puertollano, Spain
7. Unidad de Gestión Clínica Alergología, Hospital Virgen Macarena, Sevilla, Spain