1. School of Population and Public Health, and
2. Division of Respirology, University of Toronto, Toronto, Ontario, Canada
3. Adult Cystic Fibrosis Program, St. Michael’s Hospital, Toronto, Ontario, Canada; and
4. Canadian HIV Trials Network and
5. Division of Respiratory Medicine, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
6. Centre for Heart Lung Innovation, St. Paul’s Hospital and University of British Columbia, Vancouver, British Columbia, Canada