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