Funding for this research was provided by:
Canadian Institutes of Health Research (MOP-142404)
Received: 6 September 2018
Accepted: 27 May 2019
First Online: 2 July 2019
Ethics approval and consent to participate
: This study received ethical approval from the University of Manitoba Health Research Ethics Board. Consent was not received from study participants; this was a retrospective population-based cohort study that used secondary data and therefore obtaining consent was not practicable.
: Not applicable.
: The authors declare that they have no competing interests.