1. Department of Pulmonology, Haematology and Oncology; Division of Pneumology 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