Funding for this research was provided by:
National Natural Science Foundation of China (31600067, 21506113, 31470229)
China Postdoctoral Science Foundation (2017T100064, 2015M581074)
Ministry of Science and Technology of the People's Republic of China (2016YFE0108500)
Article History
Received: 26 July 2018
Revised: 6 January 2019
Accepted: 8 January 2019
First Online: 23 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.