1. Department of Pediatrics, British Columbia Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
2. Pediatric Department, University of Alberta, Edmonton, Alberta, Canada
3. Department of Medicine, University of Calgary, Calgary, Alberta, Canada
4. Pediatric Department, University of Ottawa, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
5. Kingston Health Sciences Centre, Kingston, Ontario, Canada
6. Calgary COPD & Asthma Program, Alberta Health Services, Calgary, Alberta, Canada
7. Department of Family Medicine, The Moncton Hospital, Moncton, New Brunswick, Canada
8. Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada