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Correction to: Scientific Reports 10.1038/s41598-017-05886-w, published online 13 July 2017
The original version of this Article contained a typographical error in the corresponding author’s email address: ‘liminghuayx@126.com’ should read ‘liminghua12@163.com’.
This error has now been corrected in the HTML and PDF versions of the Article.
The original article can be found online at 10.1038/s41598-017-05886-w.
