1. Child and Adolescent Neuropsychiatry Unit, Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi, SA, Italy
2. Department of Medicine, Surgery and Dentistry \'Scuola Medica Salernitana\', University of Salerno, Baronissi, SA, Italy
3. Department of Pediatrics, University of Perugia, Giorgio Menghini Square, 06129 Perugia, Italy