Funding for this research was provided by:
Research Grants Council, University Grants Committee (14201314)
Research Grants Council, University Grants Committee (14209416)
Health and Medical Research Fund (14151771)
HKU Engineering COVID-19 Action Seed Funding (NA)
Article History
Received: 8 January 2019
Accepted: 1 October 2020
First Online: 16 October 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.