Funding for this research was provided by:
Key Project of the General Logistics Department of PLA (BWS13C014)
General Program of National Natural Foundation of China (81672160, 31570127)
Received: 2 September 2019
Accepted: 13 March 2020
First Online: 26 March 2020
Ethics approval and consent to participate
: This study was approved by the Committee of the First Affiliated Hospital of Army Military Medical University [Approval Number: 2014KY [CitationRef removed]]. All the patients were anonymous and any other personal information was not used in this study.
: Not applicable.
: All contributing authors declare no conflicts of interests.