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Post-Publication corrections on some circled numbers

Posted by zhenwei7319 on 15 Feb 2014 at 14:29 GMT

We are sorry to inform you that an error about circled numbers occurred in our article. For example, some circled numbers in figure legends of Figure 3 and content of Table 1 are replaced by some symbols. We have made correction inquiry to PLOS ONE journal and wish they could be resolved as soon as possible. We are very sorry if it affected your reading and understanding.

No competing interests declared.