1. Department of Biomedical Sciences, Neuropsychopharmacology Unit, University of Cagliari, Cagliari, Italy
2. Centre of Excellence “Neurobiology of Dependence”, University of Cagliari, Cagliari, Italy
3. Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, College Lane Campus, University of Hertfordshire, Hatfield, Herts, AL10 9AB, United Kingdom