1. Unit of Child and Adolescent NeuroPsychiatry & Laboratory of Molecular Psychiatry and Neurogenetics; University “Campus Bio-Medico”; Rome Italy
2. Mafalda Luce Center for Pervasive Developmental Disorders; Milan Italy
3. Unit of Child and Adolescent Neuropsychiatry, “Gaetano Martino” University Hospital; University of Messina; Messina Italy