1. Allergy and Respiratory Diseases; IRCCS San Martino Hospital-University of Genoa-IST; Genoa; Italy
2. Laboratorio Centrale di Analisi; Istituto Giannina Gaslini; Genoa; Italy
3. Department of Respiratory and Allergic Diseases; Allergy Unit; Azienda Ospedaliera Umberto I; Ancona; Italy
4. Institute of Translational Pharmacology; Italian National Research Council; Second University of Naples; Naples; Italy
5. Section of Immunoallergology; University of Florence; Florence; Italy
6. Allergy Unit; Azienda Ospedale Università; Verona; Italy
7. Immunoallergology Unit; University of Salerno; Salerno; Italy
8. Department of Internal Medicine; Section of Allergy and Clinical Immunology; University of Bari; Bari; Italy
9. Rete di Allergologia Regione Piemonte; Azienda Sanitaria Cuneo 1; Cuneo; Italy