Cihat Örken1, Sibel Üstün Özek2, Emna Jamoussi1, Canan Emir1. 1. Clinic of Neurology, Prof. Dr. Cemil Taşçıoğlu City Hospital, University of Health Sciences Turkey, Istanbul, Turkey. 2. Clinic of Neurology, Prof. Dr. Cemil Taşçıoğlu City Hospital, University of Health Sciences Turkey, Istanbul, Turkey. sibelustun@hotmail.com.