1. Unit of Pharmacology, Department of Medical and Surgical Sciences University of Bologna via Irnerio 48 40126 Bologna Italy
2. Pharmacology Unit, Department of Diagnostics and Public Health University of Verona p.le L.A. Scuro, 10 37134 Verona Italy
3. Department of Neurosciences, Psychology, Drug Research and Child Health (NeuroFarBa), Tuscan Regional Centre of Pharmacovigilance University of Florence 50139 Florence Italy
4. Department of Experimental Medicine Second University of Neaples via de Crecchio 7 80138 Neaples Italy
5. Hospital Statistic Unit University Hospital of Verona p.le Aristide Stefani, 1 37126 Verona Italy