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Article History

Received: 12 June 2018

Accepted: 7 September 2018

First Online: 12 October 2018

Ethics approval and consent to participate

: The study was approved by the institutional ethics committees at each participating site (Royal Children’s Hospital (31008R); Princess Margaret (2025/EP); Kids First Starship Children’s Hospital (13/NTA/22/AM02); Royal Children’s Hospital Brisbane, Mater Children’s Hospital and The Townsville Hospital (HREC/12/QRCH/58); Women’s and Children’s Hospital (HREC/13/WCHN/14); Children’s Hospital Westmead (LNR/13/SCHN/43); and Monash Medical Centre (12326B). We obtained informed verbal consent from parents, guardians or older adolescents (as per local ethics requirements) apart from instances of life-threatening or fatal injuries where participating ethics committees granted a waiver of consent [].

: Not applicable

: The authors declare that they have no competing interests.

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