1. Unit of Pharmacology, Department of Experimental Medicine, School of Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
2. Unit of Respiratory Medicine, Department Experimental Medicine, University of Rome “Tor Vergata”, Rome, Italy
3. Institute of Pharmaceutical Science, King’s College London, London, UK
4. Unit of Respiratory Disease and Lung Function, Department of Medicine and Surgery, University of Parma, Parma, Italy