Funding for this research was provided by:
National Natural Science Foundation of China (81430038)
Young Teacher Foundation of Sun Yat-sen University (18ykpy05)
National Key Research &Development Program of China National Key Research &Development Program of China (2017YFC0112000)
Science and Technology Program of Guangzhou, China (201704020164)
Received: 12 May 2020
Accepted: 4 August 2020
First Online: 14 August 2020
Ethics approval and consent to participate
: Ethical approval for this investigation was obtained from the Research Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University. Due to the retrospective nature without identifiable patient information, the requirement for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.