1. Laboratory of Clinical Neurophysiology , First Department of Neurology, School of Medicine, , Athens 11528 , Greece
2. National and Kapodistrian University of Athens , First Department of Neurology, School of Medicine, , Athens 11528 , Greece
3. First Department of Psychiatry , School of Medicine, , Athens 11528 , Greece
4. National and Kapodistrian University of Athens , School of Medicine, , Athens 11528 , Greece
5. Laboratory of Microbiology , Aeginition Hospital, , Athens 11528 , Greece
6. National and Kapodistrian University of Athens , Aeginition Hospital, , Athens 11528 , Greece
7. First Department of Neurology , School of Medicine, , Athens 11528 , Greece