1. Pulmonology Unit, Department of Thoracic Diseases; GB Morgagni-L Pierantoni Hospital; Forlì Italy
2. Department of Respiratory Diseases and Allergology; Aarhus University Hospital; Aarhus Denmark
3. Departments of Radiology; GB Morgagni-L Pierantoni Hospital; Forlì Italy
4. Pathology; GB Morgagni-L Pierantoni Hospital; Forlì Italy
5. Operative Unit of Pathology; S. Maria Nuova Hospital; Reggio Emilia Italy
6. Department of Pathology; Verona University; Verona Italy
7. Pulmonary Unit; University of Verona; Verona Italy