Article History
Received: 7 May 2020
Revised: 31 August 2020
Accepted: 22 September 2020
First Online: 16 October 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Ethics Committee of the University of British Columbia (H18-02704; H16-01140).
: This research study was conducted retrospectively from data obtained for clinical purposes. We consulted extensively with the IRB of the University of British Columbia who determined that our study did not need consent. An IRB official waiver of consent was granted from the IRB of the University of British Columbia.
: Not applicable
: Not applicable