Funding for this research was provided by:
National Natural Science Foundation of China (11771373, 11861065)
Natural Science Foundation of Xinjiang Province (2016D03022)
Text and Data Mining valid from 2020-01-14
Received: 13 September 2019
Accepted: 6 January 2020
First Online: 14 January 2020
: The authors declare that they have no competing interests.