Department of General Surgery, Yüzüncü Yıl University, School of Medicine, Van
2.Department of Biochemistry, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
3.Departments of Biostatistic, İstanbul University, İstanbul Medical Faculty, İstanbul
4.Department of Anaesthesiology and Reanimation, Van Training and Research Hospital, Van
5.Department of General Surgery II, Haseki Training and Research Hospital, İstanbul