Funding for this research was provided by:
Canadian Institutes of Health Research (Funding Reference # 143293)
Received: 22 January 2019
Accepted: 20 June 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.