Li, Qiang
Hu, Lansheng
Zhao, Zhijun
Ma, Li
Li, Jiquan
Xu, Liqing
Wang, Jiming
Funding for this research was provided by:
Basic Research Projects of Qinghai Province (2017-ZJ-770)
National Natural Science Foundation of China (81860588)
Projects of Guangxi Health commission (Z20170733)
Article History
Received: 13 December 2019
Accepted: 24 August 2020
First Online: 14 October 2020
Competing interests
: The authors declare no competing interests.