1 Division of Neurology, Department of Pediatrics, Prince Sultan Military Medical City, P.O. Box 7897, Riyadh 11159, Saudi Arabia 2 Clinic of Child and Adolescent Neuropsychiatry, Medical School, University of Salerno, S.Giovanni e Ruggi Hospital, Largo d’Ippocrate, 84100 Salerno, Italy 3 Divisions of Child and Adolescent Neurology, Department of Neurology, Mayo Clinic, 200 1st Street SW No. W4...