Funding for this research was provided by:
National Natural Science Foundation of China (11601182, 11801211, 11571137)
Department of Science and Technology of Jilin Province (20180520213JH)
Education Department of Jilin Province (JJKH20180114KJ)
Article History
Received: 21 November 2018
Accepted: 31 March 2019
First Online: 5 April 2019
Competing interests
: The authors declare that they have no competing interests.