1. Department of Medical Biochemistry , Yerkoy State Hospital , Yozgat , Turkey
2. Department of Ophthalmology , Fethi Sekin City Hospital, Health Science University , Elazig , Turkey
3. Department of Medical Biochemistry , Yozgat City Hospital , Yozgat , Turkey
4. Department of Ophthalmology , Samsun Training and Research Hospital, Health Science University , Samsun , Turkey
5. Department of Neonatology , Istinye University , Istanbul , Turkey
6. Department of Physiology, Faculty of Medicine , Firat University , Elazig , Turkey
7. Department of Medical Biochemistry and Clinical Biochemistry, (Firat Hormones Research Group), Faculty of Medicine , Firat University , Elazig , Turkey