Funding for this research was provided by:
National Basic Research Program of China (973 Program) (2018YFC2001103)
National Major Science and Technology Projects of China (2018ZX09201-011)
Natural Science Foundation of Beijing Municipality (61801477)
Beijing Municipal Commission of Education (KZ201810025041)
Text and Data Mining valid from 2020-04-15
Received: 5 February 2020
Accepted: 9 April 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: Not applicable.
: Written informed consent for publication was obtained from all participants.
: The authors declare that they have no competing interests.