Updates are available Correction dated 2017-03-13
Click to view Correction: https://doi.org/10.1186/s13018-017-0538-7
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Authors
Lian, Jianqiang
Dong, Lele
Zhao, Yanjun
Sun, Jinlei
Zhang, Wenlong
Gao, Chunzheng http://orcid.org/0000-0001-6688-9541
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Funding
Funding for this research was provided by:
Department of Education, inner mongolia (NJZY16202)
