Funding for this research was provided by:
National Natural Science Foundation of China (81572920)
Natural Science Foundation of Zhejiang Province of China (LY15H160038)
Applied Basic Research Foundation of Yunnan Province (2013CB911303)
Article History
Received: 20 February 2019
Accepted: 12 June 2019
First Online: 21 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.