1. School of Pharmacy; Pharmacology Unit, University of Camerino; Camerino Italy
2. Department of Health and Human Services; Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse (NIDA) and National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH); Bethesda Maryland