Funding for this research was provided by:
the National Natural Science Foundation of China (81560402)
Text and Data Mining valid from 2018-07-18
Received: 4 March 2018
Accepted: 5 July 2018
First Online: 18 July 2018
: The experiments involving animals were approved by the Ethics Committee for the Use and Care of Animals of Guilin Medical University (Guilin, China).
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.