1. Cystic Fibrosis Therapeutics Development Network Coordinating Center, Seattle Children’s Hospital, Seattle, Washington;
2. Department of Pediatrics and
3. Department of Biostatistics, University of Washington, Seattle, Washington;
4. Division of Pulmonary and Critical Care Medicine, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland;
5. Division of General Pediatrics and Respiratory Diseases, Boston Children’s Hospital, Boston, Massachusetts;
6. Department of Pediatrics, Harvard Medical School, Harvard University, Boston, Massachusetts;
7. Division of Pulmonary and Critical Care Medicine and
8. Division of Respiratory Translational Medicine Program, SickKids Research Institute, Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada;
9. Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada;
10. Department of Pediatrics, Rainbow Babies and Children’s Hospital and School of Medicine, Case Western Reserve University, Cleveland, Ohio;
11. Division of Pulmonary and Critical Care Medicine, Department of Medicine, School of Medicine, Washington University, St. Louis, Missouri;
12. Division of Pediatric Pulmonology, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina;
13. Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;
14. Cystic Fibrosis Foundation, Bethesda, Maryland;
15. Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire; and
16. The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, New Hampshire