1 First Department of Neurology, University of Athens, Medical School, Aeginition Hospital; Department of Neurology, G. Gennimatas General Hospital of Athens, Athens, Greece.
2 Department of Neurology, G. Gennimatas General Hospital of Athens, Athens, Greece.
3 Department of Medical Genetics, Athens University, Aghia Sophia Children's Hospital, Athens, Greece.
4 First Department of Neurology, University of Athens, Medical School, Aeginition Hospital, Athens, Greece.