1. Ankara City Hospital, General Surgery Universiteler, 1604. Cd. No: 9 D: No: 9, 06800, Ankara,Turkey
2. Mengen State Hospital, Family Medicine Department, Bolu,Turkey
3. Ladik State Hospital, Family Medicine Department, Samsun,Turkey
4. Ankara City Hospital, General Surgery Department, Ankara,Turkey
5. Yildirim Beyazit University Faculty of Medicine, Biochemistry Department, Ankara,Turkey