1. Department of Ophthalmology Dokuz Eylül University School of Medicine Izmir Turkey
2. Department of Neurology Ege University School of Medicine Izmir Turkey
3. Department of Radiology Dokuz Eylül University School of Medicine Izmir Turkey
4. Department of Neurology Dokuz Eylül University School of Medicine Izmir Turkey
5. Department of Neurology Royal Prince Alfred Hospital Sydney NSW Australia