Funding for this research was provided by:
National Natural Science Foundation of China (81501839)
Education Department of Jilin Province (JJKH20180214KJ)
Jilin Department of Health (2017J071)
Natural Science Foundation of Jilin Province (20170623092TC-09, no.20160101091JC, 20150414039GH)
Jilin University (2012223)
Article History
Received: 1 August 2018
Accepted: 24 August 2018
First Online: 31 August 2018
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.