S Mazzucchi1, E Unti2, D Frosini1, F Baldacci1, R Ceravolo3. 1. Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126, Pisa, Italy. 2. U.O. Neurologia, Nuovo Ospedale Apuano, Via E. Mattei 21, 54100, Massa, Italy. 3. Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126, Pisa, Italy. robertoceravolo66@gmail.com.