1. Department of Respiratory Medicine, Medical School, Democritus University of Thrace, University General Hospital of Alexandroupolis, 68100 Alexandroupolis, Greece
2. Department of Neurology, Medical School, Democritus University of Thrace, University General Hospital of Alexandroupolis, 68100 Alexandroupolis, Greece
3. Department of Child and Adolescent Psychiatry, School of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
4. Department of Physical Education and Sport Science, Democritus University of Thrace, 69100 Komotini, Greece