1. Department of Educational Sciences, Chair of Pediatrics; University of Catania; Catania Italy
2. Unit of Neurosurgery, Department of Neurosciences; University of Catania; Catania Italy
3. Institute of Orthopedics; University Hospital “Policlinico-Vittorio Emanuele”; Catania Italy
4. National Centre for Rare Diseases; Istituto Superiore di Sanità; Rome Italy
5. Institute of Neurological Sciences; National Research Council; Catania Italy
6. Unit of Pediatrics and Pediatric Emergency “Costanza Gravina”; University Hospital “Policlinico-Vittorio Emanuele”; Catania Italy
7. Unit of Medical Genetics, Department of Medical and Pediatric Sciences; University of Catania; Catania Italy
8. IRCCS Associazione Oasi Maria Santissima; Troina Italy