Funding for this research was provided by:
National Natural Science Foundation of China (31600942)
Received: 14 April 2020
Accepted: 24 September 2020
First Online: 22 October 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Commission of General Hospital of Central Theater Command (025–1). The ethics committee approved verbal informed consent from all participants or participants’ next of kin. Written informed consent was waived by the ethics commission for participants with emerging infectious diseases.
: Not applicable.
: The authors declare that they have no competing interests.