Funding for this research was provided by:
National Natural Science Foundation of China (81501237)
National Key R&D Program of China (2017YFC1001200)
2016 PUMCH Science Fund for Junior Faculty (PUMCH-2016-2.2)
Text and Data Mining valid from 2019-08-30
Received: 11 April 2019
Accepted: 13 August 2019
First Online: 30 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Peking Union Medical College Hospital.
: Not applicable.
: The authors declare that they have no competing interests.