Funding for this research was provided by:
National Natural Science Foundation of China (81972603)
Text and Data Mining valid from 2019-11-21
Received: 22 August 2019
Accepted: 11 November 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: Ethical approval was provided by the Medical Ethics Committee of The First Affiliated Hospital of Xi’an Jiaotong University.
: All authors are responsible for the submission of this article and accept the conditions of submission.
: The authors declare that they have no competing interests.