1. Department of Rehabilitation Medicine, First Faculty of Medicine, Charles University Albertov 7, Prague 12800 Czech Republic
2. Department of Physical and Rehabilitation MedicineHacettepe University Medical School Turkey
3. Department of Physical and Rehabilitation Medicine, Ankara Physical Medicine and Rehabilitation Training and Research Hospital Turkey
4. Department of Physical and Rehabilitation Medicine, Gaziler Physical Medicine and Rehabilitation Training and Research Hospital Turkey
5. Centro Hospitalar Entre Douro e Vouga E.P.E, Portugal
6. Department of Physical Medicine and RehabilitationScientific Institute of Lissone, Istituti Clinici Scientifici Maugeri, IRCCS Lissone Italy