Funding for this research was provided by:
National Natural Science Foundation of China (81571647, 81771811, 81620108015, 81370036)
Natural Science Foundation of Beijing Municipality (7152124)
Capital clinical special program (Z151100004015141)
Text and Data Mining valid from 2020-01-02
Received: 21 May 2019
Accepted: 28 November 2019
First Online: 2 January 2020
Ethics approval and consent to participate
: All patients involved in this study were informed consent to the protocol, which was approved by the local institutional review boards.
: Not applicable.
: The authors declare that they have no competing interests.