Funding for this research was provided by:
Beijing Municipal Science & Technology Commission (Z181100001718005, 19L2152)
National Natural Science Foundation of China (81801643)
Army “Twelfth Five” Scientific Research Foundation (BWS11J050)
Chinese PLA General Hospital (QNC19047)
Received: 5 February 2020
Accepted: 17 April 2020
First Online: 29 April 2020
Ethics approval and consent to participate
: The study protocol was approved by the Research Ethics Committee of the 8th Medical Center of Chinese PLA General Hospital. The signed informed consent was obtained from all participants before the investigation.
: Not applicable.
: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.