1. Department of Neuroscience, Section of Psychiatry, University of Parma, Parma, Italy
2. Mood Disorders Program, Tufts Medical Center, Boston, MA, USA
3. School of Medicine–Public Health Unit, University of Parma, Parma, Italy
4. Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
5. Department of Psychiatry and Pharmacology, Tufts University Medical School, Boston, MA, USA