Funding for this research was provided by:
Young Scientists Fund (31400684)
Natural Science Foundation of Shanxi Province (2014021030-3)
Article History
Received: 17 January 2019
Accepted: 7 June 2019
First Online: 24 June 2019
Compliance with Ethical Standards
: Our study had been approved by the Committee on the Ethics of Human and Animal Experiments of Shanxi University
: The authors declare that they have no conflict of interest.