1. Department of Psychiatry; Harvard Medical School; International Consortium for Bipolar & Psychotic Disorder Research; Boston MA USA
2. Lucio Bini Mood Disorder Center; Cagliari Italy
3. Department of Neuroscience; Palermo University; Buenos Aires Argentina
4. Department of Psychiatry; University of Köln; Köln Germany
5. Viarnetto Psychiatric Clinic; Lugano Switzerland
6. NeSMOS Department; Sant'Andrea Medical Center; University of Rome (Sapienza); Rome Italy
7. Lucio Bini Mood Disorder Center; Rome Italy
8. Bipolar Disorders Unit; Institute of Neuroscience; Hospital Clínic; University of Barcelona; IDIBAPS; CIBERSAM; Barcelona Spain
9. Section of Psychiatry; Department of Neuroscience; University of Parma; Parma Italy
10. Neuropsychiatry Laboratory; Department of Clinical and Behavioral Neurology; IRCCS Santa Lucia Foundation; Rome Italy
11. Beth K. and Stuart C. Yudofsky Division of Neuropsychiatry; Menninger Department of Psychiatry and Behavioral Sciences; Baylor College of Medicine; Houston TX USA
12. Department of Psychiatry; University of New Mexico; Albuquerque NM USA