Funding for this research was provided by:
Health Research Council of New Zealand (08/374, 12/281, 12/310)
Received: 19 May 2021
Accepted: 10 August 2021
First Online: 25 August 2021
: The original intervention was approved by the Lower South Ethics Committee (LRS/12/08/063) and the follow-up study by the University of Otago Human Ethics Committee (12/274). Written informed consent was obtained from the parent/guardian of all child participants.
: Not applicable.
: The authors declare they have no competing interests.