1 Postgraduate School of Respiratory Medicine, Department of Experimental Medicine. University of Rome "Tor Vergata", Rome, Italy.
2 Allergy Unit, Department of Internal Medicine, University Hospital Ospedali Riuniti, Ancona - Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Italy.
3 Division of Pulmonology, S.Corona Hospital, Pietra Ligure, Savona, Italy.
4 Global Clinical Development, Chiesi Farmaceutici, Parma, Italy.
5 Department of Medicine and Surgery, Respiratory Disease and Lung Function Unit, University of Parma, Parma, Italy.
6 Allergy and Clinical Immunology. 'G. Fucito' Hospital and University Hospital, Salerno, Italy.
7 Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology, Sciences, University of Naples Federico II, Naples, Italy.
8 Allergy Unit, Presidio Sanitario Polispecialistico 'Loreto Crispi' Naples, Italy.
9 Allergy Center, Division of Internal Medicine. Ospedali Riuniti Penisola Sorrentina, Sorrento, Naples, Italy.
10 Regional Environmental Protection Agency Campania Region (ARPAC), Naples, Italy.
11 Allergy Unit, High Speciality 'San Giuseppe Moscati' Hospital, Avellino, Italy.
12 Unit of Allergology. Division of Internal Medicine, 'Fatebenefratelli' Hospital, Benevento, Italy.
13 Allergy and Clinical Immunology Unit, ASL Na 3 sud and ASL Na 2 nord, Naples, Italy.
14 Allergy Unit, ASL Na 3 (Sanitary District 59), Meta di Sorrento (Naples), Italy.
15 Postgraduate School of Internal Medicine. University of Salerno, Salerno, Italy.
16 Allergy and Clinical Immunology.'Fucito' Hospital and University Hospital, Salerno, Italy.
17 L.N. Center, Scafati (Salerno), Italy.
18 Allergy Unit. ASL (Sanitary District no. 12), Caserta, Italy.
19 ASL (Sanitary District), Avellino, Italy.
20 Unit of Allergology, Division of Internal Medicine, 'Fatebenefratelli' Hospital, Benevento, Italy.
21 G.S. Center, Salerno, Italy.
22 Diagnostic Center Basile, Naples, Italy.
23 Unit of Allergology. Division of Internal Medicine, 'Fatebenefratelli'Hospital, Benevento, Italy.
24 Air pollution Unit, Regional Environmental Protection Agency Campania Region (ARPAC), Caserta, Italy.
25 Postgraduate School of Respiratory Medicine, Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy; Department of Experimental Medicine, Unit of Respiratory Medicine, University of Rome, Tor Vergata, Rome, Italy.