Department of Mental Health and Addiction, ASST Nord Milano, Milano, Italy; Department of Medicine and Surgery, University of Milano Bicocca, Monza, Italy. Electronic address: francesco.bartoli@unimib.it. Department of Genetics, Wroclaw Medical University, Wroclaw, Poland. Department of Mental Health and Addiction, ASST Nord Milano, Milano, Italy. Department of Mental Health and Addiction, ASST Nord Milano, Milano, Italy; Department of Medicine and Surgery, University of Milano Bicocca, Monza, Italy; Division of Psychiatry, University College London, London, UK.