Department of Pulmonology, Haematology and Oncology. Division of Pulmonology. Unit of Allergology, High Speciality A.Cardarelli Hospital, Naples, Italy. 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. Respiratory Allergy Unit. G. Da Procida Hospital, Salerno, Italy. Allergy Unit, ASL (Sanitary District n°12), Caserta, Italy. Allergy and Clinical Immunology, G. Fucito, Hospital and University Hospital, Salerno, Italy. Allergy Unit, Presidio Sanitario Polispecialistico Loreto Crispi Naples, Italy. Allergy Center, Division of Internal Medicine. Ospedali Riuniti Penisola Sorrentina, Sorrento, Naples, Italy. Department of Respiratory Disease, Federico II University AO Dei Colli, Naples, Italy. Allergy Unit. High Speciality San Giuseppe Moscati Hospital, Avellino, Italy. Unit of Allergology. Division of Internal Medicine, Fatebenefratelli Hospital, Benevento, Italy. Allergy Unit. ASL (Sanitary District n°12), Caserta, Italy. Pulmonary Rehabilitation Unit ICS Maugeri Telese Terme, Benevento, Italy. Division of Pulmonology, S.Corona Hospital, Pietra Ligure, Savona, Italy. Unit of Allergology, San Michele Clinic, Maddaloni, Caserta, Italy. ASL (Sanitary District), Avellino, Italy. Nutritionist. Allergologist. Allergy Unit, Department of Internal Medicine, University Hospital Ospedali Riuniti, Ancona, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Italy.