Funding for this research was provided by:
Health and Medical Research Fund of the Food and Health Bureau (13141941)
Received: 26 June 2020
Accepted: 26 September 2020
First Online: 8 October 2020
Ethics approval and consent to participate
: The study protocol was approved by the Joint CUHK-NTEC Clinical Research Ethics Committee (CREC Ref. No.: 2017.199-T) and the NTWC Clinical Research Ethics Committee (CREC Ref. No. NTWC/CREC/15147). Written informed consent was obtained from all eligible participants.
: Not applicable.
: The authors declare that they have no competing interests.