1. Department of Child Psychiatry, Medical School, National and Kapodistrian University of Athens, Agia Sophia Children’s Hospital, Athens, Greece
2. Department of Speech Language Therapy, School of Health Sciences, University of Ioannina, Ioannina, Greece
3. Child and Adolescent Psychiatric Unit of Aetoloakarnania, Messolonghi, Greece
4. Department of Linguistics, School of Philology, Faculty of Philosophy, University of Ioannina, Ioannina, Greece