Funding for this research was provided by:
National Natural Science Foundation of China (81772639, 81672960, 81672443)
Natural Science Foundation of Beijing Municipality (7192157)
CAMS Innovation Fund for Medical Sciences (2016-I2M-1-001)
Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences (2018PT32002, 2018PT32014)
Text and Data Mining valid from 2019-12-01
Received: 19 April 2019
Accepted: 12 November 2019
First Online: 1 December 2019
Ethics approval and consent to participate
: Not applicable.
: All authors agree to publish the article.
: The authors declare no potential conflicts of interest.