1. New England Newborn Screening Program and Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts
2. Department of Pediatrics, Mike McMorris Cystic Fibrosis Research and Treatment Center, University of Colorado Health Sciences Center and Children's Hospital, Denver, Colorado
3. Cystic Fibrosis Foundation, Bethesda, Maryland
4. State Laboratory of Hygiene
5. Department of Newborn Medicine, Brigham and Women's Hospital, Boston, Massachusetts
6. Department of Newborn Medicine, Children's Hospital, Boston, Massachusetts
7. Social and Behavioral Research Branch, National Human Genome Research Institute
8. Department of Clinical Bioethics, Warren G. Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland
9. Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington
10. Department of Preventive Medicine, University of Colorado Health Sciences Center, Denver, Colorado
11. Department of Respiratory Medicine, Royal Children's Hospital, Melbourne, Australia
12. Department of Pediatrics, University of Wisconsin, Madison, Wisconsin
13. Department of Pediatrics, University of Massachusetts Medical Center, Worcester, Massachusetts