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The University of Otago Human Ethics Committee approved this study (12\/298).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Research involving human participants and\/or animals"}},{"value":"Informed consent was obtained from all individual participants (parental consent as subjects are children) included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}