1. Department of Anesthesiology and Reanimation Ataturk University School of Medicine Erzurum Turkey
2. Clinical Research, Development and Design Application and Research Center, School of Medicine Ataturk University Erzurum Turkey
3. Department of Gastroenterology, School of Medicine Ataturk University Erzurum Turkey
4. Department of General Surgery, School of Medicine Ataturk University Erzurum Turkey
5. Department of Anesthesiology and Reanimation Palandoken State Hospital Erzurum Turkey