1. Department of Neurology, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey
2. Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey
3. Department of Psychiatry, Faculty of Medicine, Katip Celebi University, Izmir, Turkey
4. Department of Psychiatry, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey
5. Izmir University of Economics, Medical Point Hospital, Izmir, Turkey
6. Multiple Sclerosis Research Association, Izmir, Turkey