Li, Guodong
Hu, Xiaoling
Sun, Lu
Li, Xin
Li, Jianfeng
Li, Tongli
Zhang, Xiaohui
Funding for this research was provided by:
Shanxi Province Scientific Research Foundation for Returned Overseas Chinese Scholars (2012098)
National Natural Science Foundation of China (81500472)
Article History
Received: 23 May 2017
Accepted: 29 November 2017
First Online: 20 February 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interest.
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