1. Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
2. Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
3. Department of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
4. Li Ka Shing Knowledge Institute of St Michael’s Hospital, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
5. Department of Medicine, Université de Montréal, Montréal, Québec, Canada
6. Department of Medicine, University of Calgary, Calgary, Alberta, Canada
7. Firestone Institute for Respiratory Health, McMaster University, Hamilton, Ontario, Canada
8. Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
9. Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
10. Centre de Recherche, Hopital Laval, Université Laval, Québec, Québec, Canada