1. Internal Medicine (Endocrinology and Metabolism Diseases), School of Medicine, Firat University, Elazig, Turkey
2. Department of General Surgery, School of Medicine, Firat University, Elazig, Turkey
3. Internal Medicine (Gastroenterology), School of Medicine, Firat University, Elazig, Turkey
4. Department of Radiology, School of Medicine, Firat University, Elazig, Turkey
5. Department of Nuclear Medicine, School of Medicine, Firat University, Elazig, Turkey
6. Department of Medical Biochemistry (Firat Hormones Research Group), School of Medicine, Firat University, Elazig, Turkey