Funding for this research was provided by:
the Natural Science Foundation of Chin (11371130)
Natural Science Foundation of Guangxi (2014GXNSFBA118015, 2016CSOBDP0004)
Natural Science Foundation of Guangxi (2016JC2014)
Article History
First Online: 28 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants performed by any of the authors.