Retrospective Study
Copyright ©The Author(s) 2018.
World J Clin Cases. Nov 6, 2018; 6(13): 632-640
Published online Nov 6, 2018. doi: 10.12998/wjcc.v6.i13.632
Figure 1
Figure 1 Flow chart of patients enrolled in this study. The 114 tattooed group subjects and the 228 non-tattooed group subjects were selected by propensity score matching. A total of 342 patients was enrolled.