Received: 5 October 2021
Accepted: 5 July 2022
First Online: 12 July 2022
: Ethics approval was obtained from the Joint Chinese University of Hong Kong – New Territories East Cluster Clinical Research Ethics Committee (Ref: 2020.552). Written informed consent was received from participating students and parents prior to the start of the trial.
: Not applicable.
: No conflict of interest was declared.