Received: 7 September 2021
Accepted: 27 January 2022
First Online: 24 February 2022
: This study was conducted in accordance with the Declaration of Helsinki and approved by the Research Ethics Committee of the Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences (Reference number: GDREC2018543H (R1)) and all participants provided written informed consent to participate in the survey.
: Not applicable.
: The authors declare that they have no competing interests.