Funding for this research was provided by:
British Columbia Lung Association
Canadian Respiratory Research Network
Received: 15 January 2018
Accepted: 31 January 2018
First Online: 14 February 2018
Ethics approval and consent to participate
: Both trials received approval from each participating institutions’ local research ethics board. This analysis received approval from the University of British Columbia/Providence Health Care Research Ethics Committee (Approval No. H16–03232).
: Not applicable.
: The authors declare that they have no competing interests.
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