1. Department of Neurology, Yıldırım Beyazıt University Faculty of Medicine, Ankara, Turkey

2. Department of Neurology, Ankara Atatürk Training and Research Hospital, Ankara, Turkey

3. Department of Biochemistry, Ankara Atatürk Training and Research Hospital, Ankara, Turkey

4. Department of Biochemistry, Yıldırım Beyazıt University Faculty of Medicine, Ankara, Turkey