Received: 9 May 2022
Accepted: 19 August 2022
First Online: 5 September 2022
: Ethics approval for this study was obtained from the affiliated University of British Columbia - Providence Health Care Research Ethics Board. We certify that the study was performed in accordance with the Declaration of Helsinki ethical standards. No written informed consent was obtained from patients as this was a secondary data analysis. No informed consent was obtained from the participants in the initial CCC trial. The trial meets all requirements for exception from informed consent.
: Not applicable.
: The authors declare that they have no competing interests.