Updates are available Erratum dated 2017-07-20
Click to view Erratum: https://doi.org/10.1038/s41598-017-04856-6
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Authors
Xu, Qian
Dong, Yuxiang
Yang, Ren
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Article History
Received: 17 May 2016
Accepted: 13 February 2017
First Online: 8 March 2017
Change Date: 20 July 2017
Change Type: Erratum
Change Details: A correction to this article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.
Competing Interests
: The authors declare that they have no competing interests.
