1. Department of Medicine, Western University, London, Ontario, Canada;
2. Department of Pediatrics, British Columbia Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada;
3. Departments of Pediatrics and of Social and Preventive Medicine, Centre Hospitalier Universitaire Sainte-Justine, University of Montreal, Montreal, Quebec, Canada;
4. Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada;
5. Kingston Health Sciences Centre - Kingston General Hospital, Kingston, Ontario, Canada;
6. Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada;
7. Department of Pediatrics, North York General Hospital, University of Toronto, Toronto, Ontario, Canada;
8. Department of Pulmonary Medicine and Thoracic Surgery, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Québec, Québec, Canada;
9. Deparment of Medicine, Royal Victoria Regional Health Centre, Barrie, Ontario, Canada;
10. Department of Medicine, Queen’s University, Kingston, Ontario, Canada