1. Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, AOUS, Siena, Italy
2. Department of Medical and Surgical Sciences and Neurosciences, Respiratory Disease and Lung Transplant Unit, University of Siena, Viale Bracci, Siena, 53100, Italy
3. Department of Medical and Surgical Sciences and Neurosciences, Diagnostic Imaging Unit, University of Siena, AOUS, Siena, Italy