Funding for this research was provided by:
Faculty of Medicine, University of British Columbia
BC Cancer Agency
University of Calgary
Article History
Received: 1 June 2018
Accepted: 18 June 2018
First Online: 4 July 2018
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was waived because this study consisted of a retrospective review of existing records without any direct patient contact. The research ethics board considered this a minimal risk study.