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Contributors JD conceived the study and developed the protocol. PW, SSa and SSu led the drafting of the manuscript. All authors contributed to data collection and/or analysis and interpretation, revising the manuscript, and approved the final version submitted for publication.
Funding This research was funded by Canadian Frailty Network (Technology Evaluation in the Elderly Network), which is supported by the Government of Canada through the Networks of Centres of Excellence (NCE) programme. This project was also supported financially by the Temmy Latner Centre for Palliative Care and the Toronto General/Toronto Western Foundation, and received in-kind support from the Ottawa Hospital Research Institute. JD received support for this project from the Associated Medical Services through a Phoenix Fellowship.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
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