1. Neurology Department, Democritus University of Thrace, 68100 Alexandroupolis, Greece
2. School of Philosophy, University of Ioannina, 45110 Ioannina, Greece
3. Department of Physical Education and Sport Science, Democritus University of Thrace, 69100 Komotini, Greece
4. King’s College London, Institute of Psychiatry, Psychology and Neuroscience, London SE5 8AF, UK