Funding for this research was provided by:
Health Research Council of New Zealand (10-207)
Text and Data Mining valid from 2018-07-31
Received: 28 March 2018
Accepted: 18 July 2018
First Online: 31 July 2018
Ethics approval and consent to participate
: Written informed parental consent and personal assent was obtained from each participant for the collection and use of the data in future publication. Ethical approval for the study was obtained from the Auckland University of Technology Ethics Committee (10/159).
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.