Retrospective Study
Copyright ©The Author(s) 2015.
World J Gastrointest Endosc. Jul 25, 2015; 7(9): 889-894
Published online Jul 25, 2015. doi: 10.4253/wjge.v7.i9.889
Figure 2
Figure 2 Kaplan-Meier curves showing the patency time of the stent in the single-step and two-step groups.