1. School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
2. Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Dialysis Unit, 424 General Military Hospital of Thessaloniki, Thessaloniki, Greece
4. Sports Excellence, 1st Orthopaedic Dept, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece