1. Spinal Unit, Emergency Hospital “Cannizzaro”, Catania, Italy.
2. Department of Neurology IC, “Oasi” Institute for Research on Mental Retardation and Brain Aging (I.R.C.C.S.), Troina, Italy.
3. Unit of Dermatology, “Oasi” Institute for Research on Mental Retardation and Brain Aging (I.R.C.C.S.), Troina, Italy.
4. Department of Clinical and Experimental Medicine, Child Neurology Unit, Azienda Ospedaliero Universitaria “Policlinico-Vittorio Emanuele”, Catania, Italy.
5. Department of Surgical Sciences and Advanced Technologies, Section of Neurosciences, Azienda Ospedaliero Universitaria “Policlinico-Vittorio Emanuele”, Catania, Italy.