Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. Jul 28, 2015; 21(28): 8711-8722
Published online Jul 28, 2015. doi: 10.3748/wjg.v21.i28.8711
Figure 1
Figure 1 Flow chart of the literature search and study selection. Seven case-control studies were included in this meta-analysis.