1 1st Department of Neurology, Eginition Hospital, National and Kapodistrian University of Athens, Athens, Greece.
2 Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
3 Greece and Joint Academic Rheumatology Program, Departments of Physiology and Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.