Funding for this research was provided by:
National Natural Science Foundation of China (81600833)
Natural Science Foundation of Guangxi Province (2016GXNSFAA380168)
Received: 17 July 2019
Accepted: 23 September 2019
First Online: 17 October 2019
: This study was approved by the Institutional Committee for Animal Use and Care in Guangxi Medical University (Nanning, China).
: Not applicable.
: The authors declare that they have no competing interests.