Tung, Joanna Yuet-ling
Ho, Frederick Ka-wing
Tung, Keith Tsz-suen
Wong, Rosa Sze-man
Wong, Wilfred Hing-sang
Chow, Bik-chu
Ip, Patrick
Article History
Received: 11 June 2020
Accepted: 13 January 2021
First Online: 29 January 2021
Ethics approval and consent to participate
: This study was approved by Institutional Review Board of the University of Hong Kong and Hong Kong West Cluster, Hospital Authority. Written school consent and parental/guardian consent were obtained before participation in the SPFAS.
: Not applicable.
: The authors declare that they have no competing interests.