Funding for this research was provided by:
National Natural Science Foundation of China (51874145)
the Province/Jilin University co-construction project – funds for new materials (SXGJSF2017-3)
Text and Data Mining valid from 2019-01-06
Received: 28 May 2018
Accepted: 17 December 2018
First Online: 6 January 2019
Compliance with ethical standards
: In this study, neither human participant nor animals were involved.
: The authors declare that they have no competing interests.