1. Research Institute of the McGill University Health Centre, McGill University, Montréal, Quebec, Canada;
2. Department of Medicine, University of Alberta, Edmonton, Alberta, Canada;
3. Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada;
4. The Ottawa Hospital, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada;
5. Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada;
6. Department of Pharmacy, Université de Montréal, Montréal, Quebec, Canada;
7. Primary Care Lung Clinic, University of Toronto, Toronto, Ontario, Canada;
8. West Park Healthcare Centre, University of Toronto, Toronto, Ontario, Canada;
9. Family Physician Airways Group of Canada, Richmond Hill, Ontario, Canada;
10. Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Quebec, Canada;
11. Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada;
12. Respiratory Research Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada