1. University of North Carolina School of Medicine, Chapel Hill, North Carolina
2. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
3. Department of Pediatric Pneumology, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians-University, Munich, Germany
4. Vertex Pharmaceuticals (Europe) Limited, London, United Kingdom
5. Vertex Pharmaceuticals Incorporated, Boston, Massachusetts
6. St. Michael’s Hospital and Keenan Research Centre, Li Ka Shing Knowledge Institute, University of Toronto, Toronto, Ontario, Canada; and
7. Paediatric Respiratory Medicine, Imperial College and Royal Brompton and Harefield Foundation Trust, London, United Kingdom