R Peksöz1, Y Özdemir2, S S Atamanalp3. 1. Department of General Surgery, Atatürk University Research Hospital, Erzurum, Turkey. rifat-peksoz@hotmail.com. 2. Department of Gastrointestinal Surgery, Erzurum City Hospital, Erzurum, Turkey. 3. Department of General Surgery, Atatürk University Research Hospital, Erzurum, Turkey.