G Armenis1, A Zachou2, E Anagnostou2. 1. Department of Neurology, Eginition Hospital, University of Athens, Vas. Sophias Avenue 74, 11528, Athens, Greece. giorgioarmenis@hotmail.gr. 2. Department of Neurology, Eginition Hospital, University of Athens, Vas. Sophias Avenue 74, 11528, Athens, Greece.