1 Division of Pneumology and Allergology, Department of Chest Diseases, High Speciality "A. Cardarelli" Hospital, Naples, Italy. Electronic address: [email protected].
2 Allergy and Immunology Unit, Fondazione Salvatore Maugeri, IRCCS, Pavia, Italy.
3 Division of Pneumology and Allergology, Department of Chest Diseases, High Speciality "A. Cardarelli" Hospital, Naples, Italy.