Funding for this research was provided by:
Ministry of Science and Technology of China (2016YFA0400901, 2017YFA0505400)
National Natural Science Foundation of China (U1532269, 21675170)
the Major / Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology (2017FXZY004)
Article History
Received: 6 June 2018
Accepted: 7 January 2019
First Online: 15 January 2019
Compliance with Ethical Standards
:
: Yunyan Li declares that she has no conflict of interest. Wenping Mao declares that he has no conflict of interest. Chaoyang Liu declares that he has no conflict of interest. Xu Zhang declares that he has no conflict of interest. Junfeng Wang declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.