1. Neurology Department, School of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
2. B’ Department of Neurology and the MS Center, School of Medicine, AHEPA University Hospital, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. Department of Physical Education and Sport Science, University of Thessaly, 41500 Trikala, Greece
4. Department of Occupational Therapy, University of West Attica, 12243 Athens, Greece