Funding for this research was provided by:
National Natural Science Foundation of China (81670750, 81971191, 61627807)
National Key Research and Development Program of China (2016YFC1305703)
Guangxi Natural Science Foundation (2014GXNSFDA118030)
Article History
Received: 29 January 2020
Revised: 19 June 2020
Accepted: 29 June 2020
First Online: 8 July 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.