1. Neurology Department, Democritus University of Thrace, 68100 Alexandroupolis, Greece
2. Department of Occupational Therapy, University of West Attica, 12243 Athens, Greece
3. Department of Physical Education and Sport Science, Democritus University of Thrace, 69100 Komotini, Greece
4. Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK