1. Institute of Clinical Physiology-National Research Council of Italy (IFC-CNR), Pisa, Italy
2. Department of Emergency and Organ Transplantation, School and Chair of Allergology and Clinical Immunology, University of Bari Aldo Moro, Bari, Italy
3. Allergology Clinic, Clinica San Carlo, Paderno Dugnano, Milan, Italy
4. ImmunoAllergology Unit, Careggi University Hospital of Florence, Florence, Italy
5. Allergy Unit, Azienda Ospedaliero Universitaria Ospedali Riuniti, Ancona, Italy
6. School and Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy