1 Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey.
2 Karl Landsteiner Institute for Remobilization and Functional Health, Rehab Hietzing Vienna, Vienna, Austria.
3 Department of Physical and Rehabilitation Medicine, Doctor Ayten Bozkaya Spastic Children Hospital and Rehabilitation Center, Bursa, Turkey - amerveata@hotmail.com.
4 Department of Physiotherapy, West Attica University, Athens, Greece.