Olinda Pérez Quintero1, Antonio Parra Arrondo1, Beatriz Veleiro2. 1. Department of Allergy and Clinical Immunology, University Hospital of A Coruña, A Coruña, Spain. 2. Department of Allergy and Clinical Immunology, University Hospital of A Coruña, A Coruña, Spain. Electronic address: beatriz.veleiro.perez@sergas.es.