Meta-Analysis
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Dec 21, 2014; 20(47): 18001-18012
Published online Dec 21, 2014. doi: 10.3748/wjg.v20.i47.18001
Figure 4
Figure 4 Begg’s funnel plot for the assessment of publication bias.