[1] Aristotle Univ Thessaloniki, Dept Neurol 1, AHEPA Hosp, GR-54006 Thessaloniki, Greece
[2] Aristotle Univ Thessaloniki, Clin Neurophysiol Lab, AHEPA Hosp, GR-54006 Thessaloniki, Greece
[3] Aristotle Univ Thessaloniki, Propaedeut Dept Internal Med 1, AHEPA Hosp, GR-54006 Thessaloniki, Greece
[4] Univ Athens, Sch Med, Neuroimmunol Unit, Dept Pathophysiol, GR-11527 Athens, Greece