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 1
Figure 1 Age class and sex distribution. 1: 0-1; 2: 1-6; 3: 7-13; 4: 14-17; 5: 18-25; 6: 26-35; 7: 36-45; 8: 46-55; 9: 56-65; 10: 66-75; 11: 76-85; 12: > 85.