Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. Mar 28, 2015; 21(12): 3694-3705
Published online Mar 28, 2015. doi: 10.3748/wjg.v21.i12.3694
Figure 1
Figure 1 Flow chart showing study selection procedure. Eleven final case-controlled studies were included in this meta-analysis.