1. Department of Pulmonology, Haematology and Oncology, Division of Pulmonology and Allergology, High Speciality “A.Cardarelli” Hospital, Naples, Italy
2. Postgraduate School of Respiratory Medicine, Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy
3. Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
4. Division of Pneumology, S.Corona Hospital, Pietra Ligure (Savona), Italy
5. Departmental Unit of Allergy, Clinical Immunology and Respiratory Diseases, Fondazione Poliambulanza, Brescia, Italy
6. Departmental Unit of Allergology, Guglielmo da Saliceto Hospital, Piacenza, Italy.
7. Allergy and Respiratory Diseases, Policlinico San Martino, University of Genoa, Genoa, Italy