1. Cystic Fibrosis Canada, Toronto, Ontario, Canada
2. Pulmonary Division, Department of Medicine, Centre Hospitalier Universitaire de Montréal, Montreal, Quebec, Canada
3. Department of Paediatrics, University of Calgary, Alberta Children’s Hospital, Calgary, Alberta, Canada
4. Department of Pediatrics, Centre Hospitalier de l’Université Laval, Quebec, Quebec, Canada;
5. Division of Respirology and Keenan Research Centre of Li Ka Shing Knowledge Institute, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
6. Pulmonary Division, Department of Medicine, Faculty of Medicine and Health Sciences University of Sherbrooke, Sherbrooke, Quebec, Canada