Funding for this research was provided by:
National Natural Science Foundation of China (81470063)
Received: 24 August 2020
Accepted: 26 December 2020
First Online: 7 January 2021
: All procedures performed in this study followed the ethical standards of the Ethical Review Board (ERB) of The Sixth Affiliated Hospital of Sun Yat-sen University of China on 15th April, 2018 (No. 2018204).
: Not applicable.
: All authors declared no conflict of interest.