1. Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine University of Palermo Palermo Italy
2. ALS Clinical Research Center and Laboratory of Neurochemistry Department of Biomedicine, Neuroscience and Advanced Diagnostics University of Palermo Palermo Italy
3. Department of Laboratory Medicine University Hospital “P. Giaccone” Palermo Italy
4. Unit of Clinical Chemistry Maggiore della Carità Hospital Novara Italy
5. IRCSS Bonino PulejoPresidio Pisani Palermo Italy
6. Unit of Neurology Department of Biomedicine, Neurosciences and Advanced Diagnostics University of Palermo Palermo Italy