1 Collaboration for Outcomes Research and Evaluation (CORE), Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada. Electronic address: raymaker@mail.ubc.ca.
2 Collaboration for Outcomes Research and Evaluation (CORE), Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada; Division of Respiratory Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
3 Centre for Heart and Lung Innovation, St. Paul's Hospital, Vancouver, BC, Canada.
4 Collaboration for Outcomes Research and Evaluation (CORE), Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada.
5 Collaboration for Outcomes Research and Evaluation (CORE), Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada; Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, Vancouver, BC, Canada.