1. Department of Physical Medicine and Rehabilitation, Faculty of Medicine; Bulent Ecevit University; Zonguldak; Turkey
2. Department of Neurology, Faculty of Medicine; Bulent Ecevit University; Zonguldak; Turkey
3. Ankara Physical Medicine and Rehabilitation Education and Research Hospital of Ministry of Health; Ankara; Turkey
4. Department of Biostatistics, Faculty of Medicine; Bulent Ecevit University; Zonguldak; Turkey