1. Interventional Pulmonology Unit, Department of Clinical and Experimental Medicine and
2. Rheumatology Unit, Department of Clinical and Experimental Medicine, Careggi University Hospital, Florence, Italy; and
3. Pulmonary Unit, Department of Thoracic Diseases, Azienda USL Romagna, GB Morgagni-L-Pierantoni Hospital, Bologna University, Forlì, Italy