Funding for this research was provided by:
National Natural Science Foundation of China (81702287, 81700766)
Received: 11 August 2020
Accepted: 5 May 2021
First Online: 26 May 2021
: This study was approved by the ethics committee of the General Hospital of Western Theater Command and informed consent was exempted.
: Not applicable.
: The authors declare that they have no competing interests.