1. Department of Ophthalmology, Faculty of Medicine, Ataturk University, Erzurum, Turkey;
2. Department of Ophthalmology, Palandoken State Hospital, Erzurum, Turkey;
3. Department of Biochemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey;
4. Department of Pharmacology, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey;
5. Department of Internal Medicine, Regional Training and Research Hospital, Erzurum, Turkey;
6. Department of Pathology, Regional Training and Research Hospital, Erzurum, Turkey