Received: 1 October 2017
Accepted: 18 May 2018
First Online: 25 June 2018
Ethics approval and consent to participate
: The study used secondary data exclusively. The analyses conformed to the principles embodied in the Declaration of Helsinki and ethics approval was obtained from the Centre for Addiction and Mental Health Research Ethics Board (CAMH REB; Reference # 117/2016).
: Not applicable.
: The authors declare that they have no competing interests.
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