Funding for this research was provided by:
National Natural Science Foundation of China (61632017, 11301475)
National Natural Science Foundation of China (61761146005, 61502300.)
National Natural Science Foundation of China (71771161, 71471091)
Article History
Received: 5 April 2018
First Online: 17 August 2018
Compliance with ethical standards
:
: This is a theoretical research therefore there is no human nor animal subjects is involved.
: There is no conflict of interest to any other work.