Funding for this research was provided by:
National Natural Science Foundation of China (21477088)
Natural Science Foundation of Zhejiang Province (LY17B070001)
Article History
Received: 27 November 2018
Accepted: 21 January 2019
First Online: 1 February 2019
Compliance with Ethical Standards
:
: Chengjun Wang declares that he has no conflict of interest. Chuyuan Ding declares that he has no conflict of interest. Qiwei Wu declares that he has no conflict of interest. Xiyao Xiong 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.