1 Medical School of Athens, National and Kapodistrian University of Athens, Athens, Greece.
2 Orthopaedic Research and Education Center "P.N. Soukakos", Biomechanics and Gait Analysis Laboratory "Sylvia Loannou"; "Attikon" University Hospital, Athens, Greece.
3 1 Department of Orthopaedic Surgery, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
4 1 Department of Psychiatry, National and Kapodistrian University of Athens, Eginition Hospital, Athens, Greece.
5 Department of Neurological, Henry Dunant Hospital Center, Athens, Greece.