1. Endocrinology and Metabolism Department, Ataturk Training and Research Hospital, Yildirim Beyazit University, 6800 Ankara, Turkey
2. Ophthalmology Department, Ataturk Training and Research Hospital, Yildirim Beyazit University, Ankara, Turkey
3. Ophtalmology Department, Izzet Baysal Government Hospital, Bolu, Turkey
4. Department of Biochemistry, Ataturk Training and Research Hospital, Yildirim Beyazit University, Ankara, Turkey