1. Department of Ophthalmology, Gazi University Medical School, Ankara, Turkey
2. Department of Ophthalmology, Izzet Baysal Training and Research Hospital, Abant Izzet Baysal University, Bolu, Turkey
3. Department of Medical Biochemistry, Training and Research Hospital, Mugla Sıtkı Kocman University, Mugla, Turkey
4. Department of Medical Biochemistry, Gazi University Medical School, Ankara, Turkey