1. Department of General Surgery, Division of Hepato-Pancreato-Biliary (HPB) Surgery and Liver Transplantation, Istanbul University Medical Faculty, Istanbul, Turkey
2. Department of General Surgery, Trakya University Medical Faculty, Edirne, Turkey
3. Department of General Surgery, Hitit University Medical Faculty, Corum, Turkey
4. Department of Biostatistics, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey
5. Department of Anesthesiology and Reanimation, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey