Funding for this research was provided by:
Tung Wah College (CRG2018/02)
Received: 7 May 2021
Accepted: 25 May 2021
First Online: 5 June 2021
: Ethics approval has been obtained from the Research Ethics Committee of Tung Wah College (reference number: REC2019046). Permission will be obtained from the participating primary schools before data collection. Information sheets, parents’ written consents will be obtained from parents of the participants prior the intervention started.
: Not applicable.
: The authors declare that they have no competing interests.