[P-626] Efficacy and safety of use of a side viewing endoscope for stent placement in the malignant distal duodenal obstruction
○Ban Seok Lee1, Sang Hyub Lee1, Jin Myung Park1, Dong Kee Jang1, Kwang Hyun Chung1, Jae Min Lee1, Byeong Jun Song2, Ji Kon Ryu1, Yong-Tae Kim1(1.Dept. of Internal Medicine, Seuoul National University Hospital, Korea, 2.Dept. of Internal Medicine, Pusan National University Hospital, Korea)