1. Department of Biomedical Sciences, Section of Neuropsychopharmacology; University of Cagliari; Cagliari Italy
2. Department of Neuropsychopharmacology; Institute of Pharmacology, Polish Academy of Sciences; Krakow Poland
3. National Research Council of Italy; Institute of Neuroscience; Cagliari Italy
4. Department of Life and Environmental Sciences; University of Cagliari; Cagliari Italy
5. Center of Excellence for Neurobiology of Dependence; University of Cagliari; Cagliari Italy