1. Respiratory Diseases Unit, Department of Medical and Surgical Sciences
2. Clinical and Experimental Medicine Doctoral Program
3. Department of Specialistic, Diagnostic and Experimental Medicine, University of Bologna, Bologna, Italy
4. Radiology Unit and
5. Statistics Unit, Department of Diagnostics, Clinical and Public Health Medicine, and
6. Intensive Care Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplants Oncology and Regenerative Medicine, University Hospital of Modena, University of Modena and Reggio Emilia, Modena, Italy; and