1. Allergy Unit, Department of Internal Medicine University Hospital AOU delle Marche Ancona Italy
2. Department of Clinical and Molecular Sciences Marche Polytechnic University Ancona Italy
3. Allergy Unit, Division of Pulmonology S.Anna Hospital, ASST‐Lariana Como Italy
4. IRCCS Ospedale Policlinico San Martino Genova, UO Allergologia Genova Italy
5. Allergy Unit and Asthma Center Verona University Hospital Verona Italy
6. Allergy Unit AUSL della Romagna Faenza Italy
7. Allergy Unit Ospedale Infermi di Rimini Rimini Italy
8. Department of Internal Medicine Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy
9. Allergy and Immunology University of Parma Parma Italy
10. Università di Genova, DiMI Genova Italy