1. Department of Ophthalmology, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
2. Department of Ophthalmology, Regional Training and Research Hospital, Erzurum, Turkey
3. Department of Ophthalmology, Medical Faculty of Kafkas University, Kars, Turkey
4. Department of Ophthalmology, Medical Faculty of Ataturk University, Erzurum, Turkey
5. Department of Ophthalmology, Medical Faculty of Medeniyet University, Istanbul, Turkey