Funding for this research was provided by:
National Science Foundation for Young Scientists of China (81601943)
Received: 19 October 2019
Accepted: 17 February 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: This study was performed at southwest hospital and was approved by the institutional review board of the Human Research Ethics Committee of Army Military Medical University (KY201838).
: Not applicable.
: The authors declare that they have no competing interests.