Funding for this research was provided by:
Canadian Institutes of Health Research (MOP 111236)
Received: 25 April 2017
Accepted: 23 January 2018
First Online: 8 February 2018
Ethics approval and consent to participate
: This study was approved by the Health Research Ethics Board of Alberta. Consent to participate was not needed as this was a secondary data analysis based on medical records of the patients available in the population-based administrative health data.
: Not applicable.
: The authors declare that they have no competing interests.
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