1. Department of Health Sciences University of Florence Florence Italy
2. Department of Psychology Sigmund Freud University Milan Italy
3. Human Genetics Branch, Intramural Research Program, National Institutes of Health, US Department of Health and Human Services National Institute of Mental Health Bethesda Maryland USA
4. Institute of Psychiatry, Department of Neuroscience and Rehabilitation University of Ferrara Ferrara Italy
5. Integrated Department of Mental Health and Pathological Addictions University of Ferrara Ferrara Italy
6. Department of Psychiatry and Psychology, School for Mental Health and Neuroscience Maastricht University Medical Center Maastricht The Netherlands