[P-478] A comparative study of transfusion strategies for the non-variceal upper gastrointestinal bleeding
○Chang Duck Kim, Jae Min Lee, Jong Soo Lee, Seung Han Kim, Seung Joo Nam, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yoon Tae Jeen, Hong Sik Lee, Hoon Jai Chun, Soon Ho Um, Ho Sang Ryu(Division of Gastroenterology, Department of Internal Medicine, Korea University, Korea)
