Funding for this research was provided by:
Key Program of Hubei Natural Science Foundation (2015CFA106)
Fundamental Research Funds for the Central Universities (2015BQ018, 2015PY078)
Article History
Received: 19 December 2017
Accepted: 13 February 2018
First Online: 28 February 2018
Compliance with Ethical Standards
:
: Wei Chen declares that he has no conflict of interest. Yao-Ze Feng declares that he has no conflict of interest. Gui-Feng Jia declares that he has no conflict of interest. Hai-Tao Zhao declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.