Funding for this research was provided by:
National Health and Medical Research Council (APP1045836, APP1114118)
National Institutes of Health (1R01HL115485-01A1)
Received: 9 June 2019
Accepted: 20 November 2019
First Online: 23 December 2019
Ethics approval and consent to participate
: Ethical approval for HTVCO was granted by the Deakin University Human Research Ethics Committee (2013_095), the Victorian Department of Education and Training (2013_002013) and the Catholic Education Offices, Archdiocese of Melbourne, Sandhurst, Ballarat and Sale. Students enrolled in participating schools were invited to take part in the study through the distribution of a plain language statement and opt-out consent form. Students were considered to have provided informed consent unless an opt-out form signed by parents or guardians was returned to the school or verbal consent was not confirmed by the student at the time of measurement.
: Not applicable.
: The authors declare that they have no competing interests.