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