Funding for this research was provided by:
National Natural Science Foundation of China (81873750)
Natural Science Foundation of Hubei Province (2018CFB115)
Article History
Received: 30 November 2019
Accepted: 30 January 2020
First Online: 11 February 2020
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 the authors.
: For this type of study, formal consent is not required.