1. Ankara Ataturk Education and Research Hospital, Department of Ophthalmology, Ankara, Turkey
2. Faculty of Medicine, Department of Medical Biochemistry, Mugla Sitki Kocman University, Mugla, Turkey
3. Gaziantep 25 Aralık State Hospital, Department of Medical Biochemistry, Gaziantep, Turkey
4. Faculty of Medicine, Department of Medical Biochemistry, Gazi University, Ankara, Turkey