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Clinical Research
©2008 The WJG Press and Baishideng.
World J Gastroenterol. Jan 21, 2008; 14(3): 454-462
Published online Jan 21, 2008. doi: 10.3748/wjg.14.454
Figure 6
Figure 6 Funnel plot. Fixed: Fixed effects model; RR: Relative risk.


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