Received: 10 January 2020
Accepted: 18 May 2020
First Online: 26 May 2020
Ethics approval and consent to participate
: Ethics approval was obtained at each site for conduct of this study with the primary approval coming from the Health Research Ethics Board of the University of Alberta (Study number PRO00055909). Parental consent was waived as it was a retrospective chart review.
: Not applicable.
: Joseph Ting is an Associate Editor for <i>BMC Pediatrics</i>.