1 Department of Neurofarba, University of Florence, Florence, Italy; Careggi University Hospital, Florence, Italy.
2 Department of Clinical and Experimental Biomedical Sciences 'Mario Serio' University of Florence, Florence, Italy.
3 Careggi University Hospital, Florence, Italy; Department of Clinical and Experimental Biomedical Sciences 'Mario Serio' University of Florence, Florence, Italy. Electronic address: lolli@unifi.it.