Endoscopic Injection for the Treatment of Bleeding Ulcers: Local Tamponade or Drug Effect? - Lai, K H; Peng, S N; Guo, W S; Lee, F Y; Chang, F Y; Malik, U; Wang, J Y; Lo, G H; Cheng, J S; Lee, S D; Tsai, Y T (Endoscopy, 1994)