Funding for this research was provided by:
National Major Science and Technology Projects of China (2018ZX10714002-003-010, 2017ZX10303406)
Sanming Project of Medicine in Shenzhen (NO.SZSM201811071)
Received: 20 May 2020
Accepted: 11 May 2021
First Online: 22 May 2021
: All samples used in this study were de-identified and anonymous to protect patient privacy and confidentiality. This study was approved by the Ethics Committee of Shenzhen Center for Disease Control and Prevention (Permit No. 2020-003A).
: Not applicable.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.