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Publisher's Note: Error in the text.

Posted by PLOS_ONE_Group on 27 Sep 2012 at 23:09 GMT

10.2% in 1XT vs 4.6% in 10CB
http://plosone.org/article/info:doi/10.1371/journal.pone.0036174#article1.body1.sec4.p2

In the discussion, "10.2% in 1XT vs 4.6% in 10CB" should be revised to "13.3% in 1XT vs 4.6% in 8CB". The error does not influence the final conclusion.

No competing interests declared.