Retrospective Cohort Study
Copyright ©The Author(s) 2016.
World J Gastrointest Surg. Oct 27, 2016; 8(10): 693-699
Published online Oct 27, 2016. doi: 10.4240/wjgs.v8.i10.693
Figure 3
Figure 3 Surgical technique during the years (A), between sex (B) and among age classes (C).