Funding for this research was provided by:
National Key R&D Program of China (2017YFC1307500, 2018YFC1311300)
National Natural Science Foundation of China (30860088, 81260186)
Natural Science Foundation of Guangxi Province (0832134)
Guangxi Natural Science Foundation (0991149, 2015GXNSFAA139228, 2016GXNSFAA380281)
Article History
Received: 24 March 2019
Accepted: 31 July 2019
First Online: 10 August 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.
: Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.