2 Allergy Department, Hospital General Universitario de Ciudad Real, Hospital Universitario Funda-ción Alcorcón, Spain.
3 Allergy Department, Hospital Virgen del Valle, Toledo, Spain.
4 Allergy Department, Hospital Virgen del Puerto, Plasencia, Spain.
5 Allergy Department, Hospital Universitario Río Hortega, Valladolid, Spain.
6 Allergy Department, Hospital Universitario de Guadalajara, Spain, ARADyAL Spanish Thematic Network and Co-operative Research Center RD16/0006/0023.
7 Allergy Department, Hospital General La Mancha Centro, Alcázar de San Juan, Ciudad Real, Spain.
8 Allergy Department, Hospitales Universitarios Santa María y Arnau de Vilanova, IRB Lleida, Lleida, Spain.
9 Preventive Medicine Department, Hospital Universitario Clínico San Carlos, IdISSC, Madrid, Spain.
10 Allergy Department, Hospital Universitario Reina Sofía, Córdoba, Spain, Allergy Network ARAD-yAL RD16/0006/0018, Instituto de Salud Carlos III, Madrid; Instituto Maimónides de Investigación Biomédica de Córdoba, Córdoba, Spain.