Funding for this research was provided by:
National Natural Science Foundation of China (81970012)
The Science, Technology, & Innovation Commission of Shenzhen Municipality (JCYJ20170307094345589, JCYJ20180305123707368)
Received: 7 April 2020
Accepted: 27 July 2020
First Online: 12 August 2020
Ethics approval and consent to participate
: The Institutional Human Ethics Committee of affiliated Baoan Hospital of Shenzhen, Southern Medical University approved the study protocols employed in this observational study. Written informed consent was obtained from each subject or their legal guardians.
: Not Applicable.
: The authors declare no conflict of interest.