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Publisher's Note: Formatting error in Figure 12.

Posted by PLOS_ONE_Group on 17 Oct 2012 at 22:38 GMT

Comparing
http://plosone.org/article/info:doi/10.1371/journal.pone.0044854#pone-0044854-g012

There was an issue with the resolution of Figure 12. A higher resolution version of Figure 12 can be viewed here: http://www.plosone.org/corrections/pone.0044854.g012.cn.tif.

No competing interests declared.