1. Department of Educational Sciences; Chair of Paediatrics; Catania Italy
2. Centre for Neurocutaneous Disorders; University of Catania; Catania Italy
3. Institute of Neurological Sciences; National Research Council; Catania Italy
4. National Centre for Rare Diseases; Istituto Superiore di Sanità; Rome Italy
5. Child Neurology Division, Department of Paediatrics; Sapienza University of Rome; Rome Italy
6. Unit of Genetics and Pediatric Immunology, Department of Pediatrics; University of Messina; Messina Italy
7. Department ‘G. Ingrassia’, Section of Anatomic Pathology; University of Catania; Catania Italy
8. Department of Surgical Sciences; “Sapienza” University of Rome; Rome Italy
9. Unit of Microsurgery and Hand Surgery, Fabia Mater Hospital; Rome Italy
10. Unit of Paediatrics and Paediatric Emergency; University Hospital ‘Policlinico-Vittorio Emanuele’; Catania Italy
11. Branches of Psychology, Department of Educational Sciences; University of Catania; Catania Italy
12. Institute of Neurosurgery, Department of Neurosciences ‘G. Ingrassia’; University of Catania; Catania Italy
13. Institute of Neurological Sciences; National Research Council; Cosenza Italy