1 Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy.
2 Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
3 Neuroscience Area, SISSA, International School for Advanced Studies, Trieste, Italy.
4 Italian Twin Registry, Centre for Behavioural Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy.
5 Scientific Institute IRCCS "Eugenio Medea", Pasian di Prato, Ud, Italy.
6 Child Psychopathology Unit, Scientific Institute, IRCCS Eugenio Medea, Bosisio Parini (LC), Italy.
7 Department of Neurosciences and Mental Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: paolo.brambilla1@unimi.it.