Received: 23 February 2021
Accepted: 14 June 2021
First Online: 21 July 2021
: Not applicable.
: The study was pre-registered with the Australian New Zealand Clinical Trials Registry (ACTRN12617000880347).This study was approved by the Human Research Ethics Committee of the Australian National University and by the New South Wales and Victorian State Government education departments.Permission was obtained from the principal of each participating school. Written informed consent was provided by participating school staff and by parents or legal guardians of participating students. Students provided informed assent. All methods were performed in accordance with the relevant guidelines and regulations.
: The authors declare that they have no competing interests.