In the original publication of this article, Pediatric Emergency Research Canada (PERC) was not listed as an author.
The authors regret this error. The original version has been updated.
Our systems are now restored following recent technical disruption, and we’re working hard to catch up on publishing. We apologise for the inconvenience caused. Find out more: https://www.cambridge.org/universitypress/about-us/news-and-blogs/cambridge-university-press-publishing-update-following-technical-disruption
Published online by Cambridge University Press: 29 June 2018
In the original publication of this article, Pediatric Emergency Research Canada (PERC) was not listed as an author.
The authors regret this error. The original version has been updated.