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. 2014 Dec 12;9(12):e112006. doi: 10.1371/journal.pone.0112006

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© 2014 Chen, Long

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Funnel plot of the RR vs the standard error of the log RR for studies evaluating tea consumption and laryngeal cancer (A). Funnel plot of the RR vs the standard error of the log RR for studies evaluating tea consumption and laryngeal cancer (B).