Funding for this research was provided by:
City University of Hong Kong (9610404, 9610406)
Hong Kong Polytechnic University (P0036146)
RGC Theme-Based Research Scheme (T32-102-14N)
Received: 29 November 2020
Accepted: 26 August 2021
First Online: 6 September 2021
: This study was approved by the Research Ethics Committee of City University of Hong Kong (reference no.: 2–1-201510_01). All the data used in the study was anonymized before its use.
: Not applicable.
: The authors have declared that no competing interests exist.