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Meta-Analysis
©The Author(s) 2015.
World J Gastroenterol. May 14, 2015; 21(18): 5707-5718
Published online May 14, 2015. doi: 10.3748/wjg.v21.i18.5707
Figure 1
Figure 1 Flow chart of the literature search and study selection. Ultimately, seven case-control studies were included in this meta-analysis.


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