Received: 1 May 2021
Accepted: 24 November 2021
First Online: 27 December 2021
: The study and all of its protocols were approved by the institutional Ethics Research Committee of Guangdong Provincial People’s Hospital (No. GDREC2012141H). The study protocol conformed to the principles outlined in the Declaration of Helsinki and was approved by the Guangdong Provincial People’s Hospital ethics committee. Written informed consent to participate in the study was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.