1. Chair of Respiratory Medicine, Department of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
2. Chair of Respiratory Medicine, Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
3. Division of Respiratory Medicine, University Hospital Tor Vergata, Rome, Italy
4. Respiratory Disease and Lung Function Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
5. Chair of Pharmacology, Department of Experimental Medicine, University of Campania Luigi Vanvitelli, Naples, Italy