Funding for this research was provided by:
National Natural Science Foundation of China (81472775, 81472288)
Text and Data Mining valid from 2019-08-08
Received: 3 April 2019
Accepted: 24 July 2019
First Online: 8 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Army Medical University, China. All patients provided written informed consent to participate in the study.
: The authors declare that they agree to submit the article for publication.
: The authors declare that they have no competing interests.