Funding for this research was provided by:
Hong Kong College of Community Medicine (TY Chau Training, Research Scholarship 2017)
Received: 13 July 2022
Accepted: 4 February 2023
First Online: 25 February 2023
: The Human Research Ethics Committee of the University of Hong Kong approved the study (approval number: EA1602061). All procedures were conducted in accordance with the Declaration of Helsinki. Informed consent was obtained from all subjects involved in the study.
: Not applicable.
: The authors declare that they have no competing interests.