1. Department of Medical Surgical Sciences and Advanced Technologies “GF Ingrassia”, University Hospital Policlinico “G. Rodolico-San Marco”, Catania, Italy
2. Radiology Unit 1, University Hospital Policlinico “G. Rodolico-San Marco”, Catania, Italy
3. Regional Referral Centre for Rare Lung Diseases, A. O. U. "Policlinico G. Rodolico - San Marco" Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
4. Rheumatology Outpatient Clinic Associated with the National Health System, Mascalucia (Catania), Italy
5. Department of Diseases of the Thorax, Ospedale GB Morgagni, Forlì, Italy