1. Department of Life and Environmental Sciences, University of Cagliari Cittadella Universitaria di Monserrato, Monserrato Cagliari Italy
2. Laboratory of CNS Active Compounds Latvian Institute of Organic Chemistry Riga Latvia
3. Department of Biomedical Sciences, University of Cagliari Cittadella Universitaria di Monserrato, Monserrato Cagliari Italy
4. Neuroscience Institute National Research Council of Italy (CNR) Cagliari Italy