1. Metabolic and Neuromuscular Unit; Meyer Hospital; Florence Italy
2. Department of Translational Medical Sciences, Section of Pediatrics; University Federico II of Naples; Naples Italy
3. Department of Neurological Sciences; University Federico II of Naples; Naples Italy
4. Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal Child Science, Section of Medical Genetics; University of Genoa; Genoa Italy