1. Faculty of Medicine, Department of Ophthalmology, Fırat University, Elazığ, Turkey
2. Faculty of Medicine, Department of Ophthalmology, Abant Izzet Baysal University, Bolu, Turkey
3. Faculty of Medicine, Department of Rheumatology, Fırat University, Elazığ, Turkey
4. Faculty of Medicine, Department of Biochemistry, Fırat University, Elazığ, Turkey