Updates are available Erratum dated 2015-03-04
Click to view Erratum: https://doi.org/10.1038/srep08798
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Authors
Ou, Xuedong
Li, Zhengwei
Fan, Fengren
Wang, Hongbo
Wu, Hua
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Article History
Received: 18 September 2014
Accepted: 1 December 2014
First Online: 18 December 2014
Change Date: 4 March 2015
Change Type: Update
Change Details: A correction has been published and is appended to both the HTML and PDF versions of this paper. The error has been fixed in the paper.
Competing interests
: The authors declare no competing financial interests.
