Funding for this research was provided by:
Young Scientists Fund (11501518, 11701060)
Major Research Plan (11771397)
Natural Science Foundation of Chongqing (KJ1704099)
Article History
Received: 3 September 2018
Accepted: 5 March 2019
First Online: 13 March 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest in preparing this article.