1. Department of Clinical and Experimental Medicine, University of Parma, Parma, Italy
2. Mood Disorders Program, Tufts Medical Center, Boston, MA, USA
3. Unit of Public Health, Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Parma, Italy
4. Department of Mental Health, Local Health Service, Parma, Italy
5. Institute of Psychiatry, Kings College London, London, UK
6. Department of Psychiatry and Pharmacology, Tufts University Medical School, Boston, MA, USA