1. Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
2. Centre for Heart Lung Innovation, St. Paul’s Hospital, Vancouver, British Columbia, Canada
3. Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada
4. Département de Médecine, Centre Hospitalier de l’Université de Montréal, Montreal, Québec, Canada
5. Department of Medicine, McGill University, Montreal, Québec, Canada
6. Department of Medicine, University of Calgary, Calgary, Alberta, Canada
7. Department of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
8. Sunnybrook Health Sciences Centre, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
9. Department of Medicine, Firestone Institute for Respiratory Health, McMaster University, Hamilton, Ontario, Canada