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update 2

Posted by BSCHERES on 21 Oct 2014 at 07:42 GMT

As noted in my earlier comment, we became aware of questions about two figures in this published paper. The original data for these questioned figures was provided to the Editors. For figures 2 and 3, a correction has now been published: http://www.plosbiology.or.... The editors were satisfied with the data provided for the other figures.

No competing interests declared.