Funding for this research was provided by:
Innovative Research Group Project of the National Natural Science Foundation of China (81821003)
Chongqing Research Program of Basic Research and Frontier Technology (cstc2017jcyjA0544)
Text and Data Mining valid from 2019-11-20
Received: 17 July 2019
Revised: 14 October 2019
Accepted: 22 October 2019
First Online: 20 November 2019
Ethics approval and consent to participate
: This study was approved by the Ethical/Scientific Committee of Southwest Hospital.
: Not applicable
: The authors declare that they have no competing interests.