1. Department of General Surgery, Faculty of Medicine, Firat University, Elazig, Turkey
2. Department of General Surgery, Elazig Training and Research Hospital, Elazig, Turkey
3. Department of Dermatology, Faculty of Medicine, Firat University, Elazig, Turkey
4. Department of General Surgery, Harput State Hospital, Elazig, Turkey
5. Department of General Surgery, Ercis State Hospital, Van, Turkey