1. Department of Physical Medicine and Rehabilitation, Koc University School of Medicine, Istanbul, Turkey
2. Physical Medicine and Rehabilitation Unit, Keçiören training and Research Hospital, Ankara, Turkey
3. Faculty of Medicine, Department of Biostatistics, Yildirim Beyazit University, Ankara, Turkey
4. Physical Medicine and Rehabilitation Unit, Sirnak State Hospital, Sirnak, Turkey
5. Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Gazi University, Ankara, Turkey