Funding for this research was provided by:
guangzhou municipal science and technology project (202102020045)
Received: 2 July 2021
Accepted: 22 June 2022
First Online: 2 July 2022
: The study protocol involving analysis of hospital administrative data was approved by the Affiliated Brain Hospital of Guangzhou Medical University Ethics Committee. Consent to participate was not applicable.
: All authors provided the approval for publication of the manuscript.
: All authors declare that there are no competing interests.