Funding for this research was provided by:
National Natural Science Foundation of China (81971315)
Received: 25 March 2020
Accepted: 17 November 2020
First Online: 21 November 2020
Ethics approval and consent to participate
: This study was approved by the Investigational Ethics Review Board (The First Affiliated Hospital, Sun Yat-sen University), and an exemption from informed consent was obtained from the board.
: Not applicable.
: The authors declare no competing interests.